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Alan needs a total of $290 to buy a new bicycle.

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2 Answers

Let x = the number of weeks he needs to save. Since he starts with $35, that is our constant. $15 per week is our coefficient.

Therefore, 15x + 35 = 290. Now solve for x

15x = 255

x = 17 weeks

I will use x to represent the number of weeks.

35 + 15x = 290

35 + 15x - 35 = 290 - 35

15x = 255

15x/15 = 255/15

x = 17