The total amount spent by some number of people on clothing and footwear in the years 2000-2009 can be modeled by
the quadratic function f(x) = -4.307x²+72.41x +96.85, where x = 0 represents January 1, 2000, x=1 represents
January 1, 2001, and so on, and f(x) is in billions of dollars. According to the model, in what year during this period was
the amount spent on clothing and footwear a maximum?
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In the year.
billion was spent on clothing and footwear.
(Round the final answer for the amount spent to the nearest whole number as needed. Round all intermediate values to
the nearest tenth as needed.)