SOLUTION: The total amount spent by Americans on shoes and clothing from 2000 to 2009 can be modeled by f(x)=49.79x2+71.73x+97.29 where x=0 represents 2000 and f(x) is in b

Question 1029934: The total amount spent by Americans on shoes and clothing from 2000 to 2009 can be modeled by

f(x)=49.79x2+71.73x+97.29
where x=0 represents 2000 and f(x) is in billions of dollars. Based om this model, in what year did spending on shoes and clothing reach a maximum?
The 49.79x2 is supposed to be x squared.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
: The total amount spent by Americans on shoes and clothing from 2000 to 2009 can be modeled by
f(x)= -49.79x2+71.73x+97.29
where x=0 represents year 2000 and f(x) is in billions of dollars. Based om this model, in what year did spending on shoes and clothing reach a maximum?
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Max occurs when x = -b/(2a) = -71.73/(2*-49.79) is less than one.
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I think you did not post your problem correctly.
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Cheers,
Stan H.
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