posted by Laurie .
My answer is 3y^2+16 (simplifying) but the hawkes learning system won't accept this answer. Am I missing something?
Your answer is correct.
Want a bit of information? Here, from the Hawkes webpage:
<<Excellence in customer service is a core value of Hawkes Learning Systems. The company is known for its unparalleled family-style service to instructors and students. When you call Hawkes Learning Systems you will be greeted with a live person willing and able to help you with your problem. Our customer support does not distinguish between instructors or students; everyone will always be courteously assisted. <<