Question

An online retailer currently offers a 40% discount on cameras. Write a function relating a camera's purchase price after coupon, y, to the retail price,x. Give the domain of this function.

Answer 1

This is done by setting the final price equal to the retail price minus the retail price times the coupon. Another way you can do it is, take the coupon's percentage out of 100 then multiply that by the retail price to receive the final price