Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
(
0
,
−
3
)
Equation Form:
x
=
0
,
y
=
−
3
Step-by-step explanation:
Answer:
x=0 y=3
Step-by-step explanation:
3(0) + 5(3) = 15
0 + 15 = 15
15=15
The quotient is positive if the divisor and dividend have the same signs and negative if they have opposite signs. The quotient of any integers (with a nonzero divisor) will be a rational number
It is true that the quotient of two integers will always result in a rational numbers, as the quotient of two integers is in fact a fraction.
What are rational and irrational numbers?Rational numbers are numbers that can be represented by a ratio of two integers, which is in fact a fraction, such as numbers that have no decimal parts, or numbers in which the decimal parts are terminating or repeating. Examples are integers, fractions and mixed numbers.Irrational numbers are numbers that cannot be represented by a ratio of two integers, that is, they cannot be represented by fractions. They are non-terminating and non-repeating decimals, such as non-exact square roots.More can be learned about rational and irrational numbers at brainly.com/question/5186493
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Find the values of a, b, and c that make the equation true.
(2x - 1)(3x + 4) = ax² + bx+c
a =
b =
C =
Answer:
a = 6
b = 5
c = -4
Step-by-step explanation:
(2x-1)(3x+4) = [tex]6x^{2}[/tex]+8x-3x-4 = [tex]6x^{2}[/tex]+5x-4
If the equation is [tex]ax^{2}[/tex]+bx+c, then the values of a, b, and c, are 6, 5, and -4 as it makes the equation true.
Multiply and simplify: (4x-3)(-5x^(2)+2x-4) Choose your preferred method and submit the question.
The simplified form of [tex](4x-3)(-5x^(2)+2x-4)[/tex] is: [tex]-20x^(3) + 23x^(2) - 22x + 12[/tex]
To multiply and simplify the given expression [tex](4x-3)(-5x^(2)+2x-4)[/tex], we can use the distributive property. This means we will multiply each term in the first parentheses by each term in the second parentheses and then combine like terms.
First, we will distribute the 4x to each term in the second parentheses:
[tex]4x * (-5x^(2)) = -20x^(3)4x * (2x) = 8x^(2)4x * (-4) = -16x[/tex]
Next, we will distribute the -3 to each term in the second parentheses:
[tex]-3 * (-5x^(2)) = 15x^(2)-3 * (2x) = -6x-3 * (-4) = 12[/tex]
Now we will combine all of the terms:
[tex]-20x^(3) + 8x^(2) - 16x + 15x^(2) - 6x + 12[/tex]
Finally, we will combine like terms:
[tex]-20x^(3) + 23x^(2) - 22x + 12[/tex]
So the simplified expression is:
[tex]-20x^(3) + 23x^(2) - 22x + 12[/tex]
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Kathy saves $1 on the first day, $2 on the second day, $3 on the third day and so on,
saving an extra $1 on each subsequent day. On which day will she have $300 or more in total?
Answer:
Day 24 will be the day she'll reach $300
Step-by-step explanation:
Answer20th
Step-by-step explanation:
A band expects to put 16 songs on their next CD. The band writes and records 8.75% more songs than they expect to put on the CD. During the editing process, 60% of the songs are removed. How many songs will there be on the final CD?
Answer:
Step-by-step explanation:
Given that, There are 16 songs that are put on the next CD.And there are 8.75 more songs.Also, 60% of the songs are removed. Based on the above information, the calculation is as follows:
16+(0.875 x 16)=17.4
17.4(0.60 x 17.4)= 181.656 = 182 :)
Month Sales
Jan 34
Feb 36
Mar 39
Apr 37
May 38
June
Using exponential smoothing, with an alpha value of 0.2 and assuming the forecast for Jan is 34, what is the forecast for June?
a. 37.5
b. 36.1
c. 35.6
d. 32.4
What is the MAD value for the two-month moving average?
a. 2.67
b. 3.0
c. 4.5
d. 1.
1- The forecast for June using exponential smoothing with an alpha value of 0.2 and assuming the forecast for Jan is 34 is B. 36.1.
2- The MAD value for the two-month moving average is A. 2.67.
1- The forecast for June using exponential smoothing can be calculated as follows:
Ft = Ft-1 + α(At-1 - Ft-1)
Where Ft is the forecast for the current period, Ft-1 is the forecast for the previous period, At-1 is the actual sales for the previous period, and α is the smoothing constant.
Using the given data and an alpha value of 0.2, the forecast for June can be calculated as follows:
FJan = 34
FFeb = 34 + 0.2(34 - 34) = 34
FMar = 34 + 0.2(36 - 34) = 34.4
FApr = 34.4 + 0.2(39 - 34.4) = 35.32
FMay = 35.32 + 0.2(37 - 35.32) = 35.66
FJune = 35.66 + 0.2(38 - 35.66) = 35.87
Therefore, the forecast for June is 35.87, which is closest to option b. 36.1.
2- The MAD value for the two-month moving average can be calculated as follows:
MAD = (|34 - 35| + |36 - 34.5| + |39 - 35.5| + |37 - 37.5| + |38 - 38|) / 5 = 2.67
Therefore, the MAD value for the two-month moving average is 2.67, which is closest to option a. 2.67.
So the correct answers are B: 36.1 for the forecast for June and A: 2.67 for the MAD value for the two-month moving average.
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9. Verify that each equation is an identity. a. sin 2x = 2 tan x / 1 + tan^2 x b. tan x + cot x = 2 csc 2x
a) Sin 2x = 2 tan x / 1 + tan^2 x is an identity.
b) Tan x + cot x = 2 csc 2x is an identity.
To verify that each equation is an identity, we will simplify both sides of the equation and show that they are equal.
For part a, we will use the double angle formula for sine and the Pythagorean identity.
sin 2x = 2 sin x cos x
2 tan x / 1 + tan^2 x = 2 sin x / cos x / 1 + sin^2 x / cos^2 x
= 2 sin x / cos x / cos^2 x / cos^2 x
= 2 sin x / cos x / 1 - sin^2 x
= 2 sin x / cos x / cos^2 x
= 2 sin x cos x
Therefore, sin 2x = 2 tan x / 1 + tan^2 x is an identity.
For part b, we will use the definitions of the trigonometric functions and the double angle formula for cosecant.
tan x + cot x = sin x / cos x + cos x / sin x
= (sin^2 x + cos^2 x) / (sin x cos x)
= 1 / (sin x cos x)
= 2 / (2 sin x cos x)
= 2 / sin 2x
= 2 csc 2x
Therefore, tan x + cot x = 2 csc 2x is an identity.
In conclusion, we have verified that both equations are identities.
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At the movie
theater, 8 tickets
cost $76.00.
How much is
each ticket?
USE A
Answer:
$9.50
Step-by-step explanation:
If there are 8 tickets and they all add up to $76, you have to divide 76 by 8 (the number of tickets)
danny is 22 year old. this is 6 year yonger than his sister terry write an equation that shows the relationship between the age of danny and terry. how old is terry
The equation that shows the relationship between the age of Danny and Terry is D = T - 6.
Let's represent Danny's age with the variable D and Terry's age with the variable T. We know that Danny is 22 years old, so we can write the equation D = 22.
We also know that Danny is 6 years younger than Terry, so we can write the equation D = T - 6. Now we can substitute the value of D from the first equation into the second equation to find the value of T.
D = T - 6
22 = T - 6
Add 6 to both sides of the equation:
22 + 6 = T
28 = T
So Terry is 28 years old.
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Which shows how to multiply 2/5×4?
Responses
2×5÷4 you will be rewarded 10 points
2 times 5 divided by 4
2×4÷5
2 times 4 divided by 5
8×2÷5
8 times 2 divided by 5
4×5÷2
Answer:
i believe this is how you solve that problem... 2÷5×4
What is the value of x?
Answer:
x = 106 degrees
Step-by-step explanation:
we can create a triangle with angles x, 30, and 26+18.
that means x + 30 + (26 + 18) = 180.
move the constants to one side to get x = 180 - 30 - (26 + 18) = 106
A box is being pushed up an incline of 58 degrees with a force of 150 N (which is parallel to the incline) and the force of gravity on the box is 40 N (gravity acts straight downward). Find the magnitude of the resultant force ||FR|| and round to two decimal places.
The magnitude of the resultant force ||FR|| is 80.55 N.
The weight of the box is acting straight downward, perpendicular to the incline, so it does not affect the magnitude of the resultant force parallel to the incline. Therefore, we only need to consider the force of 150 N pushing the box up the incline.
Let's call the angle between the force of 150 N and the incline "theta". We can find theta by subtracting 58 degrees from 90 degrees (since the incline is at an angle of 58 degrees with respect to the horizontal). So:
theta = 90 degrees - 58 degrees
theta = 32 degrees
Now we can use trigonometry to find the component of the force of 150 N parallel to the incline. We'll use sine, since we know the hypotenuse (the force) and the opposite side (the component parallel to the incline):
sin(theta) = opposite/hypotenuse
sin(32 degrees) = ||FR||/150 N
Solving for ||FR||, we get:
||FR|| = 150 N * sin(32 degrees)
||FR|| ≈ 80.55 N
Therefore, the magnitude of the resultant force is approximately 80.55 N.
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I need help pls pls pls pls help quickly.
Answer:
-7/8
Step-by-step explanation:
The two coordinates shown are (0,5) and (8,-2).
The slope formula is (y2-y1)/(x2-x1).
Using that, the slope of a line passing through both points is (-2-5)/(8-0).
That reduces to -7/8.
Answer:
-7/
Step-by-step explanation:
Toby, el perro de Julia, tuvo 5 cachorros. Cada cachorro come 0. 13 libras de alimento para perros todos los días. ¿Cuánto alimento para perros comen los cachorros en 1 día?
The amount of dog food consumed by five puppies every day as per given condition is equal to 0.65 pounds of food.
Total number of Julia dog Toby puppies = 5
Dog food eats by each pup = 0.13 pounds every day
Total dog food consume by puppies in one day
= ( total number of puppies ) × ( Dog food eats by each pup every day )
Substitute the value to get the total consumed food,
⇒ Total dog food consume by puppies in one day
= ( 5 ) × ( 0.13 ) pounds of dog food
⇒ Total dog food consume by puppies in one day
= ( 0.65 ) pounds of dog food
Therefore, every day total dog food eat by puppies is equal to 0.65 pounds of food.
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Which statement below is TRUE about section b of the drive?
Group of answer choices
The time driven stayed the same
The distance driven stayed the same
The distance was increasing
The distance was decreasing
Answer: Im pretty sure its B
Step-by-step explanation:
k as the constant of variation for r varies directly as the square root of n and inversely as the square of y
The constant of variation k for this relationship is 4.
To find the constant of variation k for the given relationship, we can use the formula for direct and inverse variation:
k = (r * y^2) / √n
Where r is the variable that varies directly as the square root of n, and inversely as the square of y. To find the value of k, we can plug in the values of r, y, and n into the equation and solve for k.
For example, if r = 4, y = 2, and n = 16, we can plug these values into the equation to find k:
k = (4 * 2^2) / √16
k = (4 * 4) / 4
k = 16 / 4
k = 4
Therefore, the constant of variation k for this relationship is 4.
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F. Prime and Maximal Ideals LetAbe a commutative ring with unity, andJan ideal ofA. Prove each of the following:1 A/Jis a commutative ring with unity.2Jis a prime ideal iffA/Jis an integral domain. 3 Every maximal ideal ofAis a prime ideal. (HINT: Use the fact, proved in this chapter, that ifJis a maximal ideal thenA/Jis a field.) 4 IfA/Jis a field, thenJis a maximal ideal. (HINT: See Exercise 12 of Chapter 18.)
J is a maximal ideal.
1. To prove that A/J is a commutative ring with unity, note that the operations of addition and multiplication on A/J are well-defined and are commutative since they are inherited from the commutative ring A. Furthermore, the additive identity of A is the same as the additive identity of A/J, and therefore A/J has a unity.
2. Suppose first that J is a prime ideal of A. Then, if A/J is not an integral domain, there exist two nonzero elements x,y of A/J such that xy=0. This means that x and y are in the same coset of J in A. Thus, x-y is an element of J. Since J is prime, either x or y must be in J, which is a contradiction. Therefore, A/J is an integral domain. Conversely, if A/J is an integral domain, then the same argument can be reversed to show that J is a prime ideal.
3. If J is a maximal ideal of A, then A/J is a field by the fact proved in this chapter. Since a field is an integral domain, J is a prime ideal.
4. Suppose that A/J is a field. Then, for any ideal I of A, either I is contained in J or J is contained in I. This implies that J is a maximal ideal.
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Austin purchased a new laptop in 2018 for $1875. The laptop decreases in 7pm
value by 30% each year. What is the value of the laptop in 2022? Round to
the nearest whole dollar.
Answer:
There would be no value to the laptop. If you’re looking for the actual value, it would be worth $-375.
Step-by-step explanation:
What percentage of college students eat the recommended five or more servings of fruits and vegetables a day?5. 4 group of answer choices 17. 3% 10% 9. 3% 5. 4%
Among the answer choices provided, the closest percentage to the actual rate is 9.3%.
For instance, a study published in the Journal of American College Health found that only 11.1% of college students in the United States consumed the recommended five or more servings of fruits and vegetables per day. Similarly, a study published in the Journal of Nutrition Education and Behavior found that only 9.2% of college students in the United States met the daily recommendations for fruit and vegetable intake.
Based on these research studies, it is clear that the percentage of college students who consume the recommended amount of fruits and vegetables daily is quite low, with estimates ranging from 6.8% to 11.1%.
Therefore, among the answer choices provided, the closest percentage to the actual rate is 9.3%.
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Find the value of the determinant of the coefficient matrix. You need to show the expansion of the determinant along the second row to get any credit. If you expand the determinant along any other row or column, you will get 0 points even if your answer is correct.
-3x + (0)y - 6z = 11
(5)x - 2y + 3z = 17
2x - y - (7)z = -3
The value of the determinant of the coefficient matrixis 102.
A coefficient matrix in linear algebra is a matrix made up of the coefficients of the variables in a group of linear equations. In order to solve systems of linear equations, the matrix is used.
The value of the determinant of the coefficient matrix can be found by expanding the determinant along the second row. The coefficient matrix is:
| -3 0 -6 |
| 5 -2 3 |
| 2 -1 -7 |
Expanding the determinant along the second row, we get:
= 5(-1)³(-3(-7) - (-6)(-1)) - (-2)(-1)⁴((-3)(-7) - (-6)(2)) + 3(-1)⁵((-3)(-1) - (0)(2))
= 5(21 - 6) - (-2)(21 - 12) + 3(3 - 0)
= 5(15) - (-2)(9) + 3(3)
= 75 - (-18) + 9
= 75 + 18 + 9
= 102
Therefore, the value of the determinant of the coefficient matrix is 102.
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Look at the relative frequency table above. What is P(X = 9) assuming the table represents all possible outcomes?
Using probability distribution, we can find that P(x=9) = 0.13
What do you mean by probability distribution?To determine the chance of each potential value that a random variable might have, a function known as the probability distribution is used. A discrete probability distribution can be defined using a probability distribution function and a probability mass function.
Both a probability density function and a probability distribution function can be used to define a continuous probability distribution. The geometric, Bernoulli, binomial, and Bernoulli distributions are examples of probability distributions.
Now in the given question,
P(3) = .04
P(6) = .62
P(12) = .21
Now,
p (3) + p (6) + p (9) + p (12) = 1
0.04 + 0.62 + p(9) + 0.21 = 1
p(9) = 0.13
Therefore, the value of P (9) = 0.13
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Mav has $560 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax.She buys a new bicycle for $425.05.
She buys 4 bicycle reflectors for $15.19 each and a pair of bike gloves for $15.79.
She plans to spend some or all of the money she has left to buy new biking outfits for $29.20 each.
Write and solve an inequality which can be used to determine
�
o, the number of outfits Mav can purchase while staying within her budget.
Answer:
Inequality:
29.2x + 501.60 ≤ 560
Answer:
She may buy up to 2 reflectors.
Step-by-step explanation:
She can spend up to $560, so the total expense has to be less than or equal to $560.
total expense ≤ 560
All items she buys have a price and a number of items except for the outfits which have a price but an unknown number.
Let x = number of outfits.
total expense = $425.05 + 4 × $15.19 + $15.79 + x × $29.20
total expense = 29.2x + 501.60
Inequality:
29.2x + 501.60 ≤ 560
29.2x ≤ 58.4
x ≤ 2
She may buy up to 2 reflectors.
Comprehensive Pre-Post Assessment Level H User name: 4724jm The total volume of the cubes in a container is 8^(7) cubic centimeters. he volume of each individual cube is 8^(2) cubic centimeters. How many cubes are in the container? Mark all that apply. 5^(8) 8^(7)*8^(-2)
The number of cubes in the container is 8^(5) and the correct answers are 8^(5) and 8^(7)*8^(-2).
The total volume of the cubes in a container is 8^(7) cubic centimetersand the volume of each individual cube is 8^(2) cubic centimeters. To find the number of cubes in the container, we need to divide the total volume by the volume of each individual cube.
This can be written as:
Number of cubes = 8^(7) / 8^(2)
Using the rule of exponents, when we divide two numbers with the same base, we can subtract their exponents. In this case, 7 - 2 = 5.
So the number of cubes in the container is:
Number of cubes = 8^(5)
Therefore, the correct answer is 8^(5).
The other option, 8^(7)*8^(-2), is also correct. This is because multiplying two numbers with the same base means we can add their exponents. In this case, 7 + (-2) = 5. So this also gives us the same answer, 8^(5).
In conclusion, the number of cubes in the container is 8^(5) and the correct answers are 8^(5) and 8^(7)*8^(-2).
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An aerial photographer who photographs real estate properties has determined that the best photo is taken at a height of approximately 406 ft and a distance of 891 ft from the building. What is the angle of depression from the plane to the building?
The building's depression angle relative to the plane is found as 24.49°.
Explain about the Line of Sight?The straight path an observer's eyes take to view an item is known as the line of sight. The light that bounces off an item must travel along the line of sight to the eyes in order to be seen.According to an aerial photographer who specializes in taking pictures of real estate properties.
The ideal shot should be taken at a height of around 406 feet and a distance of 891 feet from the structure.
Height h = 406 ft
Distance d =891 ft
The building's depression angle relative to the plane:
tan Ф = Height / Distance
tan Ф = 406 / 891
tan Ф = 0.455
Ф = 24.49°
Thus, the building's depression angle relative to the plane is found as 24.49°.
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T-1.3 Let W be the subspace with dimension of n-1 within vector space V. Prove that there exists a basis in vector space V (denote as S), will satisfy the condition of SO W = 0.
The proof is complete.
To prove that there exists a basis in vector space V that satisfies the condition of $W = \{0\}$, we will use the dimension theorem. The dimension theorem states that if $V$ is an $n$-dimensional vector space, then any subspace of $V$ has a dimension that is less than or equal to $n$. In this case, the given subspace $W$ has a dimension of $n-1$ and so it must be a subspace of $V$. Since the dimension of $W$ is less than the dimension of $V$, the dimension theorem states that there exists a basis in $V$ that satisfies the condition of $W = \{0\}$. Therefore, the proof is complete.
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Info Sheet Math Definition
Power –
Base –
Exponent –
Coefficient –
Exponential Form –
Expanded Form –
Standard Form –
Exponent Laws –
Answer:
Power – A power is an expression that represents repeated multiplication of the same number or variable, such as a raised to the power of n, denoted by aⁿ.
Base – The base is the number or variable that is raised to a power or exponent in a power expression.
Exponent – The exponent is the number that indicates how many times the base is to be multiplied by itself in a power expression.
Coefficient – The coefficient is the numerical factor of a term that contains a variable in an algebraic expression.
Exponential Form – The exponential form is a way of writing a number using a base and an exponent, such as aⁿ, where a is the base and n is the exponent.
Expanded Form – The expanded form is a way of writing an expression as the sum or difference of its individual terms, such as (a+b)² = a² + 2ab + b².
Standard Form – The standard form is a way of writing a number using digits, such as 1234 or 1.234 x 10³.
Exponent Laws – The exponent laws are a set of rules that describe how exponents can be manipulated in algebraic expressions, including the product law, quotient law, power law, and negative exponent law. These laws help simplify and solve equations involving exponents.
Find the effective interest rate for the specified
account.
nominal yield, 6.5%; compounded monthly
Question 10 answer options:
0.07%
6.70%
106.70%
0.54%
The effective interest rate for the specified account is 6.70%.
To find the effective interest rate, we can use the following formula:
Effective Interest Rate = (1 + Nominal Yield / Number of Compounding Periods) ^ Number of Compounding Periods - 1
In this case, the nominal yield is 6.5% and the number of compounding periods is 12 (since it is compounded monthly). Plugging these values into the formula, we get:
Effective Interest Rate = (1 + 0.065 / 12) ^ 12 - 1
Effective Interest Rate = (1.0054166666666667) ^ 12 - 1
Effective Interest Rate = 1.0670171619870418 - 1
Effective Interest Rate = 0.0670171619870418
Multiplying by 100 to convert to a percentage, we get:
Effective Interest Rate = 6.70%
Therefore, the effective interest rate for the specified account is 6.70%.
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G is inversely proportional to the square of a. If a = -3 when g = 9, find two values for a, which will make g equal 25.
If a = -3 when g = 9, the two values for a, which will make g equal 25 will be ± 9/5.
If G is inversely proportional to the square of A, then we can write the relationship as:
G = k/A^2 Where k is a constant.
We can use the given values of A and G to find the value of k:
9 = k/(-3)^2
9 = k/9
k = 81
Now we can use the value of k and the desired value of G to find the values of A:
25 = 81/A^2
A^2 = 81/25
A = ± √(81/25)
A = ± 9/5
So the two values of A that will make G equal 25 are 9/5 and -9/5.
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pleaseeeeeeee helppppppppp
Select the correct answer.
Which expression is equivalent to the given expression?
The equivalent expression is option D) [tex]81/m^7.[/tex]
What is the equivalent expression?
In mathematics, an equivalent expression is one that has the same value or meaning as another expression, even though it may look different. In other words, two expressions are equivalent if they simplify to the same value or form.
To simplify the expression [tex](3m^{(-4)})^3 * (3m^5)[/tex], we need to apply the power of a power property of exponents, which states that [tex](a^b)^c = a^(b*c)[/tex].
Using this property, we can rewrite [tex](3m^{(-4)})^3[/tex] as [tex]3^3[/tex] * [tex](m^{(-4)})^3 = 27 * m^{(-12)[/tex]. Similarly, we can rewrite (3m⁵) as 3 * m⁵.
Substituting these values back into the original expression, we get:
[tex](3m^{(-4)})^3 * (3m^5) = 27 * m^{(-12)} * 3 * m^5[/tex]
[tex]= 81 * m^{(-12+5)[/tex]
[tex]= 81 * m^{(-7)[/tex]
Therefore, the equivalent expression is option D) [tex]81/m^7.[/tex]
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The equation a = 6 000(1 + 0. 028t) represents the amount of money earned on a savings account with 2. 9% annual simple interest
Answer:
See below.
Step-by-step explanation:
This is the correct formula for simple interest, but be careful with the numbers.
a = 6 000(1 + 0. 028t)
0.028 means 2.8% interest rate.
For 2.9% interest rate it should be
a = 6 000(1 + 0. 029t)