Question

Solve the following word problem.(You have a coupon for $50 off your camera purchase of $100 or more at Zeke's Camera World). 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

f(x) = x - y
Domain: x >= 100
x = retail price, y = coupon amount = $50