document.write( "Question 1157135: A store owner estimates that by charging \"x\" dollars each for a certain lamp, he can sell \"10-x\" lamps each week. What price will yield maximum revenue? \n" ); document.write( "

Algebra.Com's Answer #779956 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "The revenue is R(x) = x*(10-x).\r\n" );
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document.write( "It is a parabola opened downward, with x-intercepts at 0 and 10.\r\n" );
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document.write( "The maximum is achieved  at x= 5, exactly half way between x-intercepts.\r\n" );
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document.write( "So, the price of $5 per lamp will provide maximum revenue.    ANSWER\r\n" );
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