document.write( "Question 640518: Bill owns a small fast food restaurant. He found that the profit he makes by selling hotdogs is represented by the equation P - -x2 + 56x + 72, with P being profits and x the number of hotdogs. How many hotdogs must he sell to maximize his profit? \n" ); document.write( "
Algebra.Com's Answer #403252 by jim_thompson5910(35256)\"\" \"About 
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Hint: He must sell the amount that is represented at the vertex. The x coordinate of the vertex is x = -b/(2a) \n" ); document.write( "
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