Applied Calculus
Applied Calculus
7th Edition
ISBN: 9781337291248
Author: Waner, Stefan.
Publisher: Cengage Learning,
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Chapter 7.3, Problem 53E

Bottled Water Sales The rate of U.S. sales of bottled water for the period 2007–2014 could be approximated by

s ( t ) = 0.08 t 2 − 0.26 t + 8.8  billion gallons per year ( 0 ≤ t ≤ 7 ) , where t is time in years since the start of 2007.34

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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Chapter 7 Solutions

Applied Calculus

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