# During the period 1992-2000 th

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During the period 1992-2000 the number C (in million)of people participating in cross country skiing and the number S (in million) of people participating in snowboarding can be modeled byC = 0.067 t^3 - 0.107 t^2 + 0.27 t + 3.5S = 0.416 t + 1.24Where t is the number of years since 1992.a. Write an equation that model the total number of people T (in millions ) participating in cross country skiing and snowboarding as a function of the number of years since 1992.b. Find the total participating in these activities in 1992 and 2000.c. What was the average rate of change in total participation from 1992 to 2000 ?Explain how you found this rate.

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