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27 May, 21:26

Oceanside Bike Rental shop charges a 14 dollar fixed fee plus 9 dollars an hour for renting a bike. Sara paid 77 dollars to rent a bike. How many hours did she pay to have the bike checked out?

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  1. 28 May, 00:08
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    7 hours

    Step-by-step explanation:

    We have that the value of the review of a bicycle has the following function:

    v = 14 + 9 * t

    where t is the time in hours

    if we know that Aara paid a total of 77, that is v = 77, we can calculate the value of t, replacing:

    77 = 14 + 9 * t

    solving for t:

    t = (77 - 14) / 9

    t = 7

    that is to say that Sara left the bicycle in a total of 7 hours
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