Mathematics, 11.10.2020 22:01 karatekats1

A phone company charges for service according to the formula C(n) = 23 + 0.2n, where n is the number of minutes talked, and c(n) is the monthly charge, in dollars.
Find the rate of change.

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A phone company charges for service according to the formula C(n) = 23 + 0.2n, where n is the number...