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math

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Since the car rents for $22.50 per day and you are charged $.15 per mile, how many miles could you drive and not spend over $50.00

  • math -

    (50 - 22.5) / 0.15 = ______

  • math -

    number of miles ---- m

    .15m + 22.5 ≤ 50
    .15m ≤ 27.5
    m ≤ 183.333..

    Suppose you drive 183 miles
    cost = 183(.15) + 22.50 = 49.95 , still good
    suppose you drive 184 miles
    cost = 184(.15) + 22.5 =50.10, oops, we are over

    so you can drive 183 miles and still be under $50

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