Michael wants to save $800 to buy a TV. He saves $18 each week. The amount, A (in dollars), that he still needs after w
weeks is given by the following function.
A (w)=800-18w
Answer the following questions.
(a) How much money does Michael still need after 7 weeks?
$0
(b) If Michael still needs $476, how many weeks has he been saving?
weeks