You have a coupon for $50 off your camera purchase of $100 or more At Zeke’s camera world.

Question

17. Write a function relating a cameras purchase price after coupon, y, to the retail price, x. Give the domain of this function.

as online retailer currently offers a 40% discount on cameras.

18. Write a function relating the cameras purchase, y, to the retail price, x. Give the domain of this function.

19. Graph the functions from both problems 17 and 18. (use a scale of 25 for both axes.)

im done with the first few problems, I just need to graph and I’m unsure on how to start graphing this problem can you please help? Thank you :)

Answer 1

17. Well, if you buy no cameras, your price is 0. If you buy $25 worth of cameras, you pay $25. You should have another point at (50,50), (75,75), (100, 50), (125, 75)...

18. If you buy no cameras, you again pay nothing. Buying $25 worth of cameras costs you 25(0.6) = $15. Buying $50 doubles to $30 spent, etc.