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Mathematics, 23.08.2019 07:20 lillielupfer6955

Susan wants to save $800 to buy a tv. she saves $19 each week. the amount, a (in dollars), that she still needs after w weeks is given by the following function
a(w)=800-19w
how much money does susan still need after 5 weeks ?
if susan still needs $349, how many weeks has she been saving?

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Susan wants to save $800 to buy a tv. she saves $19 each week. the amount, a (in dollars), that she...
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