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4 May, 18:17

A cellphone service provider charges $5.00 per month and $0.20 per minute per call. If a customer's current bill is $55, how many minutes did the customer use? (Round any intermediate calculations and your final answer to the nearest whole minute.)

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  1. 4 May, 22:04
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    We can create the following linear equation.

    y=0.2x+5

    "x" will represent the call time and "y" will represent the monthly bill.

    So when y (monthly bill) is 55 ...

    55=0.2x+5

    0.2x=50

    x=250 minutes

    answer: 250 minutes
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