A phone company charges for service according to the formula: C(n) = 15 + 0.07n, where n is the number of minutes talked, and C(n) is the monthly charge, in dollars. The rate of change in this equation is: The initial value in this equation is:
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The rate of change is the coefficient of the variable n, which represents the cost per minute. In this case, the rate of change is 0.07. Show more…
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