document.write( "Question 1159510: A teacher can sell 123 of her pies at $4 per pie. for each $0.50 decreases in price she can sell 20 additional pies
\n" ); document.write( "write a quadratic equation
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Algebra.Com's Answer #782633 by Boreal(15235)\"\" \"About 
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Revenue= 123*$4
\n" ); document.write( "for pie sale of $3.50 per pie, she can sell 143
\n" ); document.write( "so for sale price of $4-(0.50x) the number of pies is 123+20x
\n" ); document.write( "that product is the revenue or 492+80x-61.5x-10x^2
\n" ); document.write( "so the quadratic is revenue(x)= -10x^2+18.5x+492\r
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