Goran wants to save $900 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)= 900 - 18
Answer the following questions.
(a) If Goran still needs S576, how many weeks has he been saving?
weeks
(b) How much money does Goran still need after 5 weeks?
PLZ HELP :(

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