document.write( "Question 1115177: suppose that the manufacturer of a dvd player has found that, when the unit price is p dollars, the revenue r (in dollars) as a function of the price p is r(p)=-2.5p^2+800p.
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Algebra.Com's Answer #730066 by ikleyn(52788)\"\" \"About 
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document.write( "The revenue will be maximized when the quadratic function \r\n" );
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document.write( "r(p) = =-2.5p^2 + 800p \r\n" );
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document.write( "will get the maximum.\r\n" );
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document.write( "It will happen when  p = \"%28-800%29%2F%282%2A%28-2.5%29%29\" = \"800%2F5\" = 160 dollars.\r\n" );
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document.write( "It is optimal price for dvd player.\r\n" );
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document.write( "And the maximum revenue then will be  then  -2.5*160^2 + 800*160 = 64000 dollars.\r\n" );
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\n" ); document.write( "On finding the maximum/minimum of a quadratic function see the lessons in this site \r
\n" ); document.write( "\n" ); document.write( "    - HOW TO complete the square to find the minimum/maximum of a quadratic function\r
\n" ); document.write( "\n" ); document.write( "    - Briefly on finding the minimum/maximum of a quadratic function\r
\n" ); document.write( "\n" ); document.write( "    - HOW TO complete the square to find the vertex of a parabola\r
\n" ); document.write( "\n" ); document.write( "    - Briefly on finding the vertex of a parabola\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic \"Finding minimum/maximum of quadratic functions\". \r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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