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March 28, 2017

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Find the cost C for a 10-minute phone call if the cost x for the first 3 minutes is $1.80 and the cost y for each additional minute is $0.35. Use C = x + 7y.

  • math - ,

    The Answer I got is $5.49.
    3+7×0.35
    x+7y

  • math - ,

    C = $1.80 + ( 7 x $0.35 )
    = $4.25

  • Go with vinci's answer math - ,

    Sumare's answer is not correct

  • math - ,

    Several of Sumare's answers were incorrect last night/early this morning.

    =(

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