Cellular telephone use has increased over the past two decades. Table 11.35 gives the
Chapter 11, Problem 11.7.19(choose chapter or problem)
Cellular telephone use has increased over the past two decades. Table 11.35 gives the number of cellular telephone subscriptions, in thousands, from 1985 to 2007.21 (a) Fit an exponential function to this data with time in years since 1985. (b) Based on your model, by what percent was the number of cell subscribers increasing each year? (c) In the long run, what do you expect of the rate of growth? What does this mean in terms of the shape of the graph?
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