document.write( "Question 1170646: A small canteen offers special meal package to their customers. The profit P that the canteen will earn at x number of customer is modeled by the function P(x) = -25x2 + 100x - 3000. How many people are needed for a profit of at least
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Algebra.Com's Answer #795570 by ikleyn(52835) $\"\"$ $\"About$

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\n" ); document.write( "A small canteen offers special meal package to their customers. The profit P that the canteen
\n" ); document.write( "will earn at x number of customer is modeled by the function P(x) = -25x2 + 100x - 3000.
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document.write( "To answer the question, you need to solve this equation\r\n" );
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document.write( "    -25x^2 + 100x - 3000 = 5000.\r\n" );
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document.write( "Simplify it step by step\r\n" );
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document.write( "    -25x^2 + 100x - 8000 = 0\r\n" );
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document.write( "     25x^2 - 100x + 8000 = 0\r\n" );
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document.write( "       x^2 -   4x + 320 = 0\r\n" );
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document.write( "The discriminant is  b^2 - 4ac = 4^2 - 4*320, which is negative value.\r\n" );
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document.write( "Hence, the given equation HAS NO real roots.\r\n" );
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document.write( "ANSWER.   The problem, as it is worded, printed, posted and presented is a FAKE.\r\n" );
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\n" ); document.write( "\n" ); document.write( "The problem is a FAKE.\r
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\n" ); document.write( "\n" ); document.write( "A special note to tutor @ankor@dixie-net.com\r
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document.write( "    In such circumstances, a tutor should not edit the post of the visitor \r\n" );
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document.write( "    and should not edit his (or her) numerical input data / numbers.\r\n" );
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document.write( "    The necessary and sufficient action is to inform the visitor about the discrepancy and to issue a WARNING MESSAGE.\r\n" );
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document.write( "    Providing the correct input is ENTIRELY the job and the responsibility of the visitor.\r\n" );
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