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24 July, 06:02

Alex owes his father $100. His father pays him $12.50 an hour to work at their family store. The function d=100-12.5h represents the amount of debt d Alex has. How many hours will it take him to pay off his debt?

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  1. 24 July, 07:05
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    8 Hours.

    If you want his debt to be 0, as in he has nothing left to owe, we will set d (his debt) to 0

    0 = 100 - 12.5h

    Subtract 100 to move it to the other side

    -100 = - 12.5h

    Divide each side by - 12.5

    8 = h
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