Question

A sporting goods store is having a 15% off sale on all items. Which functions can be used to find the sale price of an item that has an original price of x ? You may choose more than one correct answer.

y = .85 x
ƒ( x ) = 1.15 x
Sale = Original - 15
ƒ( x ) = x - .15 x
Sale = Original - .15(Original)

Answer 1

A, D, and E are correct.

Explanation - Taking 15% off is the same thing as only charging 85% so both D and E are correct

Answer 2

the answer is f(x) =x-0.15x

Explanation: