All computers are on sale for 10% off the original price.
If x is the original price of the computer, then the
function that represents the price after only a 10%
discount is:
Choose the composition function that gives the
final sale price after a 10% discount is followed by
a $150 coupon.

The function that gives the price, C, if only a $150
coupon is used is:
C(x) = x - 150

C(P(x)) = 0.9x - 150

If a laptop originally costs $800, the balance due after the 10% discount and $150 gift card is applied is $___

1. 34

2. 268

3. x=14.4

step-by-step explanation:

answer: 40.95

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240