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28 March, 17:39

A wireless phone company charges $34.99 a month for phone service. They also charge $0.48 per minute for long distance calls. If Bertha's bill at the end of the billing period is $64.75, how many minutes of long distance calls did she make?

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  1. 28 March, 20:32
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    The equation would be 64.75=34.99+0.48x

    64.75=34.99+0.48x now with this equation just subtract 34.99 from both sides

    After subtracting you will get 29.76=0.48x

    29.76=0.48x now with this equation divide 0.48 on each side to find x

    Now since you dive 29.76 by 0.48 you would get the answer 62 minutes

    64.75=34.99+0.48x

    -34.99 - 34.99

    29.76=0.48x

    /0.48 / 0.48

    63=x
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