Sally received a $30 gift card that could be used to download songs. After she downloaded 7 songs , she had $15 remaining on her gift card. If each song costs the same amount to download, what is the cost of one song?

Answer:

Step-by-step explanation:

a). When graph w(x) is transformed to r(x) = 4 × w(x), graph of w(x) is vertically  stretched by a scale factor of 4.

Table for the corresponding points will be,

x               w(x)                  r(x)

0                0                  0×4 = 0

15              60               60×4 = 240

30             120             120×4 = 480

45             180             180×4 = 720

b). As discussed in part (a), graph of w(x) will be vertically stretched by a scale factor of 4 to produce the graph of r(x).

c). Since, w(x) = 4x

   and r(x) = 4[w(x)]

   r(x) = 4(4x) = 16x

  r(x) = 16x

Answer:

-4

Step-by-step explanation:

4(-3)+2(4)=-4

Step-by-step explanation:

3x - 2y = 19 ...1

Replace y = x-7 in ...1

3x - 2(x-7) = 19

3x - 2x + 14 = 19

x = 19 - 14

= 5

Replace x = 5 in y = x - 7

y = 5 - 7

= -2

(5,-2)

Answer:

4

Step-by-step explanation:

Step 1:

- 3x + 20 = 8     Equation

Step 2:

- 3x = 8 - 20    Subtract 20 on both sides

Step 3:

- 3x = - 12   Subtract

Step 4:

x = - 12 ÷ - 3    Divide

Answer:

x = 4

Hope This Helps :)

Answer:

x = 4

Step-by-step explanation:

Step 1: Write equation

-3x + 20 = 8

Step 2: Solve for x

Step 3: Check

Plug in x to verify it's a solution.

-3(4) + 20 = 8

-12 + 20 = 8

8 = 8

Answer:

$114.46

Step-by-step explanation:

Answer:

really hot❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

Answer:

YES yes YES!!!

Step-by-step explanation:

Answer:

x=-7

Step-by-step explanation:

Let's solve your equation step-by-step.

−2(3x+9)=24

Step 1: Simplify both sides of the equation.

−2(3x+9)=24

(−2)(3x)+(−2)(9)=24(Distribute)

−6x+−18=24

−6x−18=24

Step 2: Add 18 to both sides.

−6x−18+18=24+18

−6x=42

Step 3: Divide both sides by -6.

−6x /−6

= 42 /−6

x=−7

Answer: undefined slope

Answer:

n onononononononoonnoono

Step-by-step explanation:

Answer:

1024w^15z

Step-by-step explanation:

(4w^3z)^5

4^5 x (w^3z)^5

1024 x (w^3z)^5

1024w^3z(x)5

1024w^15z

Answer:

$30

Step-by-step explanation:

s + 90 = 120

s = 120 - 90

s = 30

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

The most simplified inequality form of the amount of money s to spend on shopping is

s ≤ 30

Where s is the amount to spend.

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

Mirna earned $120 babysitting during spring break.

She needs to save $90 for the German Club trip.

She wants to spend the remainder of the money shopping.

This means,

The remainder amount,

= 120 - 90

= $30

We can write an inequality as,

s ≤ 120 - 90

s ≤ 30

Where s is the amount of money to spend on shopping.

Thus,

The most simplified inequality form of the amount of money s to spend on shopping is

s ≤ 30

Learn more about inequalities here:

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Answer:

92

Step-by-step explanation:

let's start off by plugging 2 for every a in the equation and 4 for every b.

4a+2b^2-2(a-3b)=?

4(2)+2(4)^2-2(2-3(4))=?

8+8^2-2(2-12)=?

8+64-2(-10)=?

8+64+20=?

?=92

Hello there!:)

is the answer!

Correct for Acellus! I know because I had it and it was correct!

4a+2b²-2(a-3b)

4a+2b^2-2a+6b

4a-2a+2b^2+6b

2a+2b^a+6b

2(2)+2(4)2+6(4)

4+32+24

60

Hope this helps!! :)

Answer:

D

Step-by-step explanation:

Polynomials are always closed with addition, subtraction, and multiplication. Division cannot be used to close a polynomial because when you divide two polynomials, its not going to come out as polynomial. All the other operations after completed will create another polynomial.

Best of Luck!

Answer:

No

Step-by-step explanation:

Answer:

Segment Addition Postulate:  2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.

Step-by-step explanation:

Answer: Segment Addition Postulate: 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.

hope this helped you kiddo.

Step-by-step explanation:

Answer:

- 131/24

Step-by-step explanation:

Answer:

−13.875

Step-by-step explanation:

Answer:

U= -7

I hope this helps!!

Answer: u=-7

Step-by-step explanation:

-18 = -4 + 2u

Add 4 to -18

-14=2u

Divide by 2

U=-7

Answer:

Domain: all real x values, Range: -4_<x_<infinity

Step-by-step explanation:

The Domain is the X values, and the range is the Y values

Answer:

40

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

Answer:

$23.40

Step-by-step explanation:

[tex]36(1 - .35) = 23.40[/tex]

Answer: Don't cry please you'll be okay.

Step-by-step explanation:

Answer:

∠BAC and ∠CAD are congruent, and m∠DAB is the sum of m∠BAC and m∠CAD.

Step-by-step explanation:

Answer:

∠BAC and ∠CAD are congruent, and m∠DAB is the sum of m∠BAC and m∠CAD.

Step-by-step explanation:

Exact answer for edmentum

The value of x for the given triangle will be 111°.

A triangle is a 3-sided shape that is occasionally referred to as a triangle. There are three sides and three angles in every triangle, some of which may be the same.

The sum of all three angles inside a triangle will be 180° and the area of a triangle is given as (1/2) × base × height.

There are many types of triangles such that right-angle triangles, equilateral triangles, and much more.

The sum of all angles inside a triangle is 180°

So,

47° + x° + 22° = 180°

x = 180° - 69° = 111°

Hence "The value of x for the given triangle will be 111°".

For more about triangles,

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Answer:

$10.75

Step-by-step explanation:

calculator

Answer:

10.75 for deltamath

Answer:

car a travels 250 miles car a travels 150 miles in 2 hours

Step-by-step explanation:

car a speed is 150 per hour and car b is  about 70 or 60 miles per hour

car a traveled 100 more miles than car b and the graph car b is 150 miles

Answer:

150 and 2

Step-by-step explanation:

Answer:

3*(n + 3) - 2n

(n +3) is the starting point.  and an increase in 3 times is  3*(n + 3) - 2n

Answer: B

Step-by-step explanation: The y-intercept is in the right place which is 5 and it is going up left to right because the slope is positive, not negative which is why D is incorrect and B is correct.

Hope this helps! :)

Step-by-step explanation:

4^5 (-2)^9/4^8 (-2)^3

= 4^(5 - 8) (-2^(9 - 3))

= 4^-3 (-2^6)

= (-2)^6/4^3

1). (-2)^a/4^b

a = 6, b = 3

2). c/d

c = -2, d = 4

Answer:

  5 cups

Step-by-step explanation:

There are 8 ounces in a cup, so the ratio given is ...

  5/8 cup : 1 gallon

Multiplying this by 8, we have ...

  5 cups : 8 gallons

If you are using 8 gallons of water, you need 5 cups of mix.

im sorry I got the answer wrong and and was trying to delete it my original answer was 40 before zI realized i said ounces