Mathematics, 20.10.2020 04:01, maccaudill02

A cellphone company charges a monthly rate of $12.95 and $0.25 a minute per call. The bill for m minutes is $21.20. How many minutes were changed on this bill?

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A cellphone company charges a monthly rate of $12.95 and $0.25 a minute per call. The bill for m min...

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