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Tuesday, November 29, 2011 at 5:42am?
Annual sales of bottled water in the country in the period 1993-2003 could be approximated by the function below, where t is time in years since 1990. Were sales of bottled water accelerating or decelerating in 2000? How fast?
R(t) = 10 t**2 + 100 t + 2400 text( million gallons ) \(3<=t<=13\)
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