Write the linear function, f, such that it has the indicated function values. ex 1: f(3) = 8, f(1) = 2 ex 2: f(10) = 12, f(16) = 1 Sep 2811:07 AM Find the average rate of change of the function f(x) = -x3 + 6x2 + x From x1 = 1 to x2 = 6 Find the average rate of change of the function f(x) = x2 - 2x + 8 From x1 = 1 to x2 = 5 0 4 Sep 117:33 AM 1 The estimated revenues r (in billions of dollars) from sales of digital music from 2002 to 2007 can be approximated by the model: r = 15.639t3 - 104.75t2 + 303.5t - 301, 2≤t≤7 where t represents the year, with t = 2 corresponding to 2002. a) Use a graphing utility to graph the model. b) Find the average rate of change of the model from 2002 to 2007. Interpret your answer in the context of the problem. The average rate of change from 2002 to 2007 is 408.56. The estimated revenue is increasing each year at a fast pace. Sep 173:20 PM Sep 2812:15 PM 2

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