Mathematics, 18.08.2021 03:40, mustafajibawi1

Suppose that the monthly cost of a long-distance phone plan (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of 0.9. See the figure below. The monthly cost for 37 minutes of calls is $14.23. What is the monthly cost for 43 minutes of calls?

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Suppose that the monthly cost of a long-distance phone plan (in dollars) is a linear function of the...