SOLUTION: Billy is saving up to buy a new cell phone. He has $45 right now, and can save $6 each month. If billy wants to buy a phone that costs $63, how many months does he have to save up?

Question 638597: Billy is saving up to buy a new cell phone. He has $45 right now, and can save $6 each month. If billy wants to buy a phone that costs $63, how many months does he have to save up?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of months needed

Subtract from both sides

It takes him 3 months to save $63
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