Concept explainers
Bottled Water Sales The rate of U.S. sales of bottled water for the period 2007–2014 could be approximated by
a. Estimate the average annual sales of bottled water over the period 2007–2014, to the nearest 100 million gallons per year. [HINT: See Quick Example 2.]
b. Compute the 2-year moving average of s. (You need not simplify the answer.) [HINT: See Quick Example 3.]
c. Without simplifying the answer in part (b), say what kind of function the moving average is.
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Applied Calculus
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