Mathematics, 20.01.2021 02:40 perrintaylor01

Suppose that the monthly cost of a long-distance phone plan is in a linear function of the total calling time when graphed the function gives a line with a slope of 0.11 the monthly cost for 51 minutes of calls is $18.36 what is the monthly cost for 54 minutes of calls

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Suppose that the monthly cost of a long-distance phone plan is in a linear function of the total cal...