In the mall you receive a coupon for 5 dollars off a pair of jeans. When you arrive at the store you find that all jeans are 25 percent off

Question

Let x represent the original cost of the jeans

18a.Write a function F(x) that represents the effect of your original coupon

18b. Write a function G(x) that represents the effect of the 25 percent discount at the store

Answer 1

18a. F(x) = x - 5.

18b. F(x) = x - 0.25x = x(1-0.25) = 0.75x.