document.write( "Question 329098: N(x)=0.3^2+7.2x+13 where x is the number of tickets sold. When will the sales peak and how many tickets will be sold that day? \n" ); document.write( "
Algebra.Com's Answer #235899 by Fombitz(32388)\"\" \"About 
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\"N%28x%29=0.3x%5E2%2B7.2x%2B13+\"
\n" ); document.write( "Check your equation.
\n" ); document.write( "The curve is a parabola that opens upwards.
\n" ); document.write( "There is not a maximum but there is a minimum.
\n" ); document.write( "\"graph%28300%2C300%2C-25%2C45%2C-60%2C100%2C0.3x%5E2%2B7.2x%2B13%29\"
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