What would the value of x be?

The mean oil-change time for which there is a 10% chance of being at or below is approximately 15.92 minutes.

We can start by using the Central Limit Theorem.

Data given:

The population mean is μ = 16.9 minutes

population standard deviation is σ = 4.7 minutes

sample size of n = 40 oil changes performed between 10 A.M. and 12 P.M.

The standard error of the mean (SE) is given by:

SE = σ / √n

SE = 4.7 / √40

SE = 0.743

To find the mean oil-change time for which there is a 10% chance of being at or below, we need to find the z-score associated with the 10th percentile of the standard normal distribution, which is -1.28 (using a standard normal distribution table or calculator).

We can use the formula for a z-score:

z = (x - μ) / SE

where x is the desired mean oil-change time.

Substituting the known values and solving for x, we get:

-1.28 = (x - 16.9) / 0.743

x = -1.28 * 0.743 + 16.9

x = 15.92

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The equivalent expression value when {a} = 2, {b} = -3, {c} = -1 is 19.

A function is a relation between a dependent and independent variable. We can write the examples of functions as -

y = f(x) = ax + b

y = f(x, y, z) = ax + by + cz

Given is the algebraic expression as -

ab² - c³

For {a} = 2, {b} = -3, {c} = -1, we can evaluate the algebraic expression as -

ab² - c³

2(-3)² - (- 1)³

2 x 9 - (- 1)

18 + 1

19

Therefore, the equivalent expression value when {a} = 2, {b} = -3, {c} = -1 is 19.

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{Question in english -

Find the value of the expression if a =2, b= -3 and c=-1 ; ab2 -c3}

If Shaun eats popping candy while drinking a can of soda, soda streams out of Shaun's nose and he gets embarrassed. It isn't the case that soda streams out of Shaun's nose and he gets embarrassed. So, it isn't the case that Shaun eats popping candy while drinking a can of soda. The logical form of this argument is denying the antecedent. The Option B is correct.

If we represent the argument in logical symbols, it would look like this:

The argument can be summarized as follows:

If P, then Q.

Not P.

Therefore, not Q.

This is the form of denying the antecedent, where the argument asserts that if P is true, then Q must also be true. However, the argument then proceeds to deny the antecedent by claiming that P is not true, and therefore, Q must not be true either.

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The function has an infinite solution.

A unique kind of relation called a function is one in which each input has precisely one output. In other words, the function produces exactly one value for each input value. The graphic above shows a relation rather than a function because one is mapped to two different values.

The relation above would turn into a function, though, if one were instead mapped to a single value. Additionally, output values can be equal to input values.

The x-values are input into the function machine. The function machine then performs its operations and outputs the y-values. The function within can be any function.

Since f(x) and g(x) are the same function, their graphs will be the same and all points on the line are solutions. All x values will be solutions. This means there are infinitely many.

You can see it algebraically too:

-2x-6 = -2x-6

-2x+2x-6 = -2x +2x -6

0-6 = 0-6

-6=-6 True. Infinite solutions.

Hence the function has an infinite solution.

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The spread of the numbers 2, 1, 4, 3, 5, 1, 1, 2 using standard deviation is approximately 1.768.

We must first determine the mean (average) of the numbers in order to use the standard deviation to determine the spread (i.e., variability) of the set of data.

By adding up all the numbers and dividing by the total number of numbers, the mean is calculated:

mean = (2 + 1 + 4 + 3 + 5 + 1 + 1 + 2) / 8

= 19 / 8

≈ 2.375

The difference between each number and the mean is then determined:

2 - 2.375 = -0.375

1 - 2.375 = -1.375

4 - 2.375 = 1.625

3 - 2.375 = 0.625

5 - 2.375 = 2.625

1 - 2.375 = -1.375

1 - 2.375 = -1.375\s2 - 2.375 = -0.375

Then, each of these discrepancies is squared:

(-0.375)^2 = 0.140625

(-1.375)^2 = 1.890625

(1.625)^2 = 2.640625

(0.625)^2 = 0.390625

(2.625)^2 = 6.890625

(-1.375)^2 = 1.890625

(-1.375)^2 = 1.890625

(-0.375)^2 = 0.140625

The variance is then calculated as the average of these squared differences:

variance is equal to 3.125 x (0.0140625 x 1.890625 x 2.640625 x 0.390625 x 6.890625 x 1.890625 x 0.140625).

Lastly, we calculate the standard deviation by taking the square root of the variance:

(3.125) 1.768 is the standard deviation.

As a result, using standard deviation, the range of the digits 2, 1, 4, 3, 5, 1, 1, 2 is almost 1.768.

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The spread οf the numbers 2, 1, 4, 3, 5, 1, 1, 2 using standard deviatiοn is apprοximately 1.768.

We must first determine the mean (average) οf the numbers in οrder tο use the standard deviatiοn tο determine the spread (i.e., variability) οf the set οf data.

By adding up all the numbers and dividing by the tοtal number οf numbers, the mean is calculated:

mean = (2 + 1 + 4 + 3 + 5 + 1 + 1 + 2) / 8

= 19 / 8

≈ 2.375

The difference between each number and the mean is then determined:

2 - 2.375 = -0.375

1 - 2.375 = -1.375

4 - 2.375 = 1.625

3 - 2.375 = 0.625

5 - 2.375 = 2.625

1 - 2.375 = -1.375

[tex]1 - 2.375 = -1.375\s2 - 2.375 = -0.375[/tex]

Then, each οf these discrepancies is squared:

(-0.375)² = 0.140625

(-1.375)² = 1.890625

(1.625)² = 2.640625

(0.625)² = 0.390625

(2.625)² = 6.890625

(-1.375)² = 1.890625

(-1.375)² = 1.890625

(-0.375)² = 0.140625

The variance is then calculated as the average οf these squared differences:

variance is equal tο 3.125 x (0.0140625 x 1.890625 x 2.640625 x 0.390625 x 6.890625 x 1.890625 x 0.140625).

Lastly, we calculate the standard deviatiοn by taking the square rοοt οf the variance:

(3.125) 1.768 is the standard deviatiοn.

As a result, using standard deviatiοn, the range οf the digits 2, 1, 4, 3, 5, 1, 1, 2 is almοst 1.768.

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Answer:

Step-by-step explanation:

(x-4)^2-9=0

Let's assume a=x-4 and b=3

We know that,

[tex]a^{2} -b^{2} =(a+b)(a-b)[/tex]

substituting values a, and b in above equation we get,

(x-4+3)(x-4-3)==

(x-1)(x-7)=0

x=1,7

Answer:

[tex]\displaystyle{x=7,1}[/tex]

Step-by-step explanation:

Given the equation:

[tex]\displaystyle{\left(x-4\right)^2-9=0}[/tex]

Add 9 both sides:

[tex]\displaystyle{\left(x-4\right)^2-9+9=0+9}\\\\\displaystyle{\left(x-4\right)^2=9}[/tex]

Square root both sides:

[tex]\displaystyle{\sqrt{\left(x-4\right)^2}=\sqrt{9}}[/tex]

Cancel square root for left side and add plus-minus to right side:

[tex]\displaystyle{x-4=\pm \sqrt{9}}[/tex]

Evaluate the surd of 9:

[tex]\displaystyle{x-4=\pm 3}[/tex]

Add 4 both sides:

[tex]\displaystyle{x-4+4=\pm 3 +4}\\\\\displaystyle{x=\pm 3 +4}[/tex]

Two solutions can be either:

[tex]\displaystyle{x=3+4}[/tex] or [tex]\displaystyle{x = -3+4}[/tex]

Hence:

[tex]\displaystyle{x=7,1}[/tex]

The image was created by translating 5 units down, 5 units up, 1 unit down, and 1 unit up. ABCD and A'B'C'D' are two polygons on the graph.

The first polygon, ABCD, has vertices at (1,-1), (3,-5), (7,-5), and (8,-5). (5,-1). The vertices of the second polygon, A'B'C'D', are located at (1,-6), (3,-10), (7,-10), and (8,-10). (5,-6).

Vertices are points in a geometric figure that define its shape. A vertex is defined mathematically as the intersection of two or more lines, edges, or curves.

We can compare the coordinates of the two polygons to determine the translation that was used to create the image. The first coordinate of the two polygons is (1,-1) and the second coordinate is (1,-1). (1,-6). The y-coordinate difference is 5 units, so the translation is 5 units down. The two polygons' second coordinate is (3,-5) and (3,-10). The y-coordinate difference is 5 units, so the translation is 5 units down.

The second polygon's third coordinate is (7,-5) and (7,-10). The y-coordinate difference is 5 units, so the translation is 5 units down. (5,-1) is the fourth coordinate of both polygons (5,-6). The y-coordinate difference is 5 units, so the translation is 5 units down.

The image was translated 5 units down, 5 units up, 1 unit down, and 1 unit up.

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Answer:

1 buck

Step-by-step explanation:

Alright man im not a pro at this, so im not gonna have a professional explanation, but the final answer will be correct.

So listen up a dice has 6 sides labeled 1,2,3,4,5,6

3 of those are even

3 of those are odd

so you have a 50% chance of landing on an evan numbered side

and a 50% chance of landing on an odd-numbered side

So basically, if we play one round, there are 2 possibilities. We get even and win 2 bucks, or we get odd and lose a buck. We dont need to worry about probability as they are both 50%. Therfore, the value is 2-1 = 1 dollar. I found the value by subtracting the possbilities.

Answer: h(x) = 8x so choice A.

Step-by-step explanation:

f(x) = (x + 2)² - 1

g(x) = -(x - 2)² + 1

SOLVE:

h(x) = f(x) + g(x)

——————————————

Step 1: Put together

((x + 2)² - 1) + (-(x - 2)² + 1)

Step 2: Positive and Negative 1 add to 0

((x + 2)² - ) + (-(x - 2)² + )

Step 3: Rewrite

(x + 2)² - (x - 2)²

Step 3: Expand the expression

(x + 2)(x + 2) - (x - 2)(x - 2)

Step 4: Distribute

(x² + 4x + 4) - (x² - 4x + 4)

Step 5: Remove Parentheses (don't forget to distribute the negative)

x² + 4x + 4 - x² + 4x - 4

Step 6: Collect Like Terms

x² and -x² add to 0

+ 4 and - 4 add up to 0

Leaving only + 4x and + 4x which add up to 8x

Therefore, h(x) = f(x) + g(x), h(x) = 8x

Graph Letter A:

The graph of the function does not form a straight line. Option A

The link between the x and y coordinates of the line's points is expressed mathematically as the line's equation. In general, a line's equation can be expressed in slope-intercept form, which is written as y = mx + b, where m denotes the line's slope and b its y-intercept (the point at which the line crosses the y-axis).

The equation in the form 5x^4 - 2 is exponential and it can not lead to a straight line.

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As a consequence, the percentage decline from 498 to 0 is equal to 100% of the original value.

As a fraction of 100, a figure can be expressed as a percentage.  For instance, the decimal equivalent of 50% is 50/100 or 0.5. The comparison or representation of changes between two numbers is frequently done using percentages. For instance, a percentage increase or decline indicates how much something has changed from its starting point. Additionally, percentages are frequently used in daily contexts like interest rates, shopping discounts, and academic performance.

given

The formula below can be used to determine the percent reduction from 498 to 0:

(Original value - New value) / 100% of the original value equals the percent decline.

The initial number in this case was 498, and the updated value is 0.

Reduced percentage equals (498 - 0) / (498 x 100%)

% drop equals 100%

As a consequence, the percentage decline from 498 to 0 is equal to 100% of the original value.

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The solutions to the equation x²= -8x - 7 are x = -1 or x = -7.

A quadratic equation is a second-order polynomial equation in a single variable x , ax2+bx+c=0. with a ≠ 0 .

To complete the square for this equation x^2 = -8x - 7

Adding the square of half the coefficient of x (which is (-8)/2 = -4) to both sides of the equation:

x² + 8x + (-4)²= -7 + (-4)^2

This gives us:

x² + 8x + 16 = 9

Now we can write the left-hand side as a perfect square:

(x + 4)² = 9

Taking the square root of both sides gives us:

x + 4 = ±3

Solving for x, we get:

x = -4 ± 3

Therefore, the solutions to the equation x²= -8x - 7 are: x = -1 or x = -7.

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Based on the information, the statements about Josiah's solution that are true are:

Josiah used a proportion to predict the number of rock songs on his MP3 player. He started by setting up the proportion:

He made a mistake when multiplying the numerator and denominator by 30. Instead, he should have multiplied them by 75, which is a common multiple of 20 and 1500. This would have resulted in:

Therefore, the total number of rock songs on his MP3 player is 750, which is different from his prediction of 300. This means that he made an error in his calculation, and he should have multiplied by 75 instead of 30.

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The ratio a : b : c in its simplest form with integer parts is therefore 11 : 32 : 36.

We are informed that

a : b = 11 : 32 ...(1)

b : c = 8 : 9 ...(2)

We must first determine the ratio between a, b, and c in terms of a common component in order to determine the ratio a: b: c. We may accomplish this by using the variable k and writing:

From equation (1), b = 32k

c = (9/8)

(According to equation (2))

The result of putting the first equation into the second equation is:

c = (9/8)(32k)\s= 36k

Hence, we have:

A = B + C = 32k + 36k

We can enter b = 32k into equation (1) to get:

a : (32k) : 36k = 11 : 32

When we multiply both sides by 32, we obtain:

32a : 32(32k) : 32(36k) = 11(32)

Simplifying:

32a : 1024k : 1152k = 352

When we multiply both sides by 32, we get:

a : 32k : 36k = 11 : 32 : 36

Hence, 11: 32: 36 is the ratio of a: b: c in its simplest form with integer parts.

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Answer:

[tex]1 - 25xy2256xx28( [/tex]

The percent of American households that watched CSI this week is 17.8%.

The percent is the part or fraction of a quantity taken from the whole quantity which is expressed in percentage. The quantity may be numbers, team, population etc.

Given that the total households are 109600000, of which 19508800 watched the television show CSI during the week of October 2, 2005.

Thus,

The percent of American households that watched CSI this week, N, can be determined as follows;

N = fraction/ whole * 100%

  = 19508800/ 109600000 * 100%

  = 17.8

N = 17.8%

The percent of American households that watched CSI this week is 17.8%.

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The area of the figure is equal to:

A = 28[tex]unit[/tex]² + 7[tex]unit[/tex]² + 7[tex]unit[/tex]² =42[tex]unit[/tex]²

You could also draw the shape on a grid and count the squares there: The rectangle has a 15 surface area. For instance, if the space is 15 m2 and each square is one meter in size (15 square meters).

Answer:

42[tex]units[/tex]²

Step-by-step explanation:

we know that

The area of the figure is equal to the area of a rectangle plus the area of two triangles

Find the area of rectangle

Observing the graph

The area of rectangle is equal to

A= bh = (2+5)(2+2)= 28[tex]unit[/tex]²

Find the area of the top triangle

A = 1/2bh = 1/2(2+5)(2+2) = 7[tex]unit[/tex]²

Find the area of the bottom triangle

A = 1/2bh = 1/2(2+5)(2+2) = 7[tex]unit[/tex]²

the area of the figure is equal to

A = 28[tex]unit[/tex]² + 7[tex]unit[/tex]² + 7[tex]unit[/tex]² =42[tex]unit[/tex]²

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Answer:

the future value or total amount due at the end of 8 months is $9,330.00

Step-by-step explanation:

To find the future value of a loan that is borrowed at a simple interest rate, we use the formula:

A = P(1 + rt)

where A is the future value or total amount due, P is the principal or initial amount borrowed, r is the simple interest rate as a decimal, and t is the time period in years.

In this case, the principal is $9000, the simple interest rate is 5.5% or 0.055 as a decimal, and the time period is 8 months or 8/12 = 2/3 years.

Substituting these values into the formula, we get:

A = 9000(1 + 0.055 × 2/3)

= 9000(1.0375)

= $9,330.00

Therefore, the future value or total amount due at the end of 8 months is $9,330.00

we know that a year has 12 months, so 8 months is really 8/12 of a year.

[tex]~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$9000\\ r=rate\to 5.5\%\to \frac{5.5}{100}\dotfill &0.055\\ t=years\to \frac{8}{12}\dotfill &\frac{2}{3} \end{cases} \\\\\\ A = 9000[1+(0.055)(\frac{2}{3})] \implies A = 9330[/tex]

Answer:

2.-♾️-61/14

3.-♾️-14

4.-♾️4

5.-♾️-10

This should be the correct answer

Exact Form:

729/2

Decimal Form:

364.5

Mixed Number Form:

364  1/2

Answer:

Step-by-step explanation:

1 jacket and 2 notebooks

(just my guess but you might get it right)

(also use desmos scientific calculator its a lot better)

Answer:

he sold 35 notebooks

Step-by-step explanation:

first you subtract 40.00 from 92.50 equaling 52.50 then you divide 52.50 by 1.50.

By answering the supplied question, we may infer that the response is equation 1.6 x 30 Equals $48 for an adult pass if the price is $30.

so on.

A mathematical equation links two statements and utilises the equals sign (=) to indicate equality. In algebra, an equation is a mathematical assertion that proves the equality of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign separates the numbers by a gap. A mathematical formula may be used to determine how the two sentences on either side of a letter relate to one another. The logo and the particular piece of software are usually identical. like, for instance, 2x - 4 = 2.

Let's assume that a child's pass costs $x.

The issue states that the price of an adult pass is 1.6 times that of a kid pass. Thus, an adult pass costs:

$1.6 times

So, if a child's pass is expensive:

a) If an adult pass costs $10, then 1.6 x 10 equals $16.

b) $20, then 1.6 x 20 Equals $32 for an adult pass.

1.6 x 30 Equals $48 for an adult pass if the price is $30.

so on.

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Answer:

227.27%

Step-by-step explanation:

Therefore , the solution of the given problem of expression comes out to be D, E, and F are the appropriate answers as a result.

There is a need for mathematical operations like multiplying, splitting, combining, and now even deleting. If the equation were combined, it would be said that: A mathematical formula, some data, and an equation A declaration of truth is composed of values, elements, and mathematical operations like additions, subtractions, missteps, algebraic formulas, and divisions. It is possible to evaluate and analyse words and phrases.

Here,

The following is how the problem 6(x+4)=20 can be solved:

=>6(x+4) = 20

=> 6x + 24 = 20

=> 6x = -4

=> x = -4/6

=>  x = -2/3

Let's verify which of the examples represents the right answer now:

=> A. (20−4)÷6 = 16/6 = 8/3 --> Incorrect

=> B. 16(20−4) = 16(16) = 256 --> Incorrect

=> C. 20−6−4 = 10 --> Incorrect

=> D. 20÷6−4 = (10/3) - 4 = (10-12)/3 = -2/3 --> Correct

=> E. 1/6(20−24) = -4/6 = -2/3 --> Correct

=> F. (20−24)÷6 = -4/6 = -2/3 --> Correct

D, E, and F are the appropriate answers as a result.

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The complete question is

Select all expressions that represent a correct solution to the equation 6(x+4)=20. copied for free from openupresources.Org Select all that apply: A. (20−4)÷6 B. 16(20−4) C. 20−6−4 D. 20÷6−4 E. 1/6(20−24) F. (20−24)÷6"

The average U.S. citizen uses approximately 88 gallons of water a day.

What is Frequency?

Frequency is a measure of how often an event occurs within a given period of time. It is typically expressed as the number of occurrences of a given event per unit of time. Frequency can be used to measure a variety of phenomena such as the frequency of sound in a given environment or the frequency of a particular chemical element in a given sample.

Selina's low-flow toilet and showerhead will reduce her total water use to just 48.4 gallons per day, a savings of 39.6 gallons of water each day. This is a 44.8% reduction in her water consumption, saving her almost 40 gallons of water per day.

By making these improvements, Selina is helping to conserve a precious resource and limit her environmental impact. Not only is she helping to conserve water, but she is also saving money on her water bill. It is estimated that a typical household can expect to save about $170 annually by making these simple changes.

In addition to her low-flow fixtures, Selina can take additional steps to reduce her water consumption. She can install a water-efficient dishwasher, reduce the frequency of her laundry loads, and install a rain barrel to collect rainwater for gardening. By making these changes, she can reduce her water consumption even further and save even more money.

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Answer:1

Step-by-step explanation:

By answering the above question, we may state that Hence, when interest Kathleen retires, her total interest will be $10,389.

Divide the principal by the interest rate, the length of time, and other factors to arrive at simple interest. Simple return = principal + interest + hours is the marketing formula. This method makes it easiest to compute interest. The most typical technique to figure out interest is as a portion of the principle sum. He will only pay his share of the 100% interest, for example, if he borrows $100 from a buddy and promises to pay it back with 5% interest. $100 (0.05) = $5. When you borrow money, you must pay interest, and when you give it out, you must charge interest. Interest is often determined as an annual percentage of the loan total. The interest on the loan is this percentage.

[tex]FV = PV x (r/n + 1)(n*t)[/tex]

where: $6,000 is the initial investment's present value, or PV.

6.4% is the yearly interest rate at zero.

n = 12 is the number of times interest is compounded annually (monthly)

33 years are equal to t. (from age 32 to age 65)

When we enter the values, we obtain:

FV = $6,000 x (1 + 0.064/12)(12*33) FV = $6,000 x (1 + 0.00533)396 FV = $6,000 x 2.7315 FV = $16,389 FV = $6,000 x 2.7315 FV = $16,389.0

As a result, Kathleen's retirement account will be worth $16,389.0 when she turns 65.

The difference between the future value and the initial investment is the total interest that Kathleen will earn:

Total interest is equal to $16,389 minus $6,000

Interest totaled $10,389.0.

Hence, when Kathleen retires, her total interest will be $10,389.

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The segment CD is common on both ΔACD and ΔBCD.

Polygon, which has three sides and three vertices, is called a triangle.

The sum of all the angles of the triangle is 180°.

Given:

Two triangles ΔACD and ΔBCD in the given image.

To find the commonality between two triangles ΔACD and ΔBCD:

The sides of the triangle ΔACD are AC, CD, and AD.

The sides of the triangle ΔBCD are BC, CD, and BD.

From the diagram,

we can clearly see that the segment CD is common on both ΔACD and ΔBCD.

CD ≅ CD (reflexivity)

Therefore, the common segment is CD.

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Answer: 9x

Step-by-step explanation:

You combine like terms.

Answer:

The down payment Lynette made is:

Down payment = 20% of $34,000 = $6,800

The amount financed is:

Amount financed = Total price - Down payment

Amount financed = $34,000 - $6,800 = $27,200

To calculate the monthly payment, we can use the following formula:

Monthly payment = (Pr(1+r)^n) / ((1+r)^n - 1)

where:

P = amount financed

r = monthly interest rate

n = number of months

First, we need to calculate the monthly interest rate:

Monthly interest rate = APR / 12

Monthly interest rate = 4.4% / 12 = 0.0036667

Now, we can calculate the monthly payment:

Monthly payment = ($27,200 * 0.0036667 * (1+0.0036667)^60) / ((1+0.0036667)^60 - 1)

Monthly payment = $501.47

The total cost of the car is the sum of the down payment and the total of all the monthly payments over 60 months:

Total cost = Down payment + Monthly payment * 60

Total cost = $6,800 + $501.47 * 60

Total cost = $37,688.20

Therefore, the total cost of Lynette's car is $37,688.20.