document.write( "Question 192819: Please help. I'M HAVING A LITTLE DIFFICULTY WITH THESE
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document.write( "Translate into a mathematical equation, solve and answer the question.\r
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document.write( "THE MATH ANXIETY CLUB HAS DETERMINED THAT THE COST , C TO MAKE X DOXEN COOKIES CAN BE ESTIMATED BY THE FORMULA C=X^2 -77X -160. THEY EXPECT THE SUPPLIES TO COST 80.00. IF THEY SELL ALL THE COOKIES FOR .25 CENTS EACH, HOW MUCH PROFIT CAN THEY PLAN ON MAKING. I DON'T EVEN KNOW WHERE TO START, COULD SOMEONE PLEASE SHOW THE STEPS AND ANSWER.
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Algebra.Com's Answer #144748 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Translate into a mathematical equation, solve and answer the question. \n" ); document.write( "THE MATH ANXIETY CLUB HAS DETERMINED THAT THE COST , C TO MAKE X DOzEN COOKIES \n" ); document.write( " CAN BE ESTIMATED BY THE FORMULA C=X^2 -77X -160. THEY EXPECT THE SUPPLIES TO \n" ); document.write( " COST 80.00. IF THEY SELL ALL THE COOKIES FOR .25 CENTS EACH, HOW MUCH PROFIT \n" ); document.write( " CAN THEY PLAN ON MAKING. \n" ); document.write( ": \n" ); document.write( "They say the cost is $80 and the cost equation is x^2 - 77x - 160 \n" ); document.write( "Find x when cost = 80: \n" ); document.write( "x^2 - 77x - 160 = 80 \n" ); document.write( "x^2 - 77x - 160 - 80 = 0 \n" ); document.write( "x^2 - 77x - 240 = 0 \n" ); document.write( "Factor to: \n" ); document.write( "(x - 80)(x + 3) = 0 \n" ); document.write( "Positive solution \n" ); document.write( "x = 80 dozen cookies ( no negative cookies allowed) \n" ); document.write( ": \n" ); document.write( "Find the revenue if you sell 80 dozen at .25 each \n" ); document.write( "80 * 12 * .25 = $240 \n" ); document.write( "Revenue - cost = profit, therefore \n" ); document.write( "240 - 80 = $160 profit \n" ); document.write( " |