document.write( "Question 582187: The profit P, in dollars, gained by selling x computers is modeled by the equation P= -5x^2 + 1000x + 5000. Find the number of computers that must be sold to obtain a profit of $55,000.00?
\n" ); document.write( "Using the quadratic equation, I came up with the computer cost being $41.42 then divided $55,000 by that and came out with 1327.86 computers needed to be sold to obtain that profit of $55,000.
\n" ); document.write( "Please help.
\n" ); document.write( "Diana \n" ); document.write( "

Algebra.Com's Answer #371984 by stanbon(75887) $\"\"$ $\"About$

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The profit P, in dollars, gained by selling x computers is modeled by the equation P= -5x^2 + 1000x + 5000. Find the number of computers that must be sold to obtain a profit of $55,000.00?
\n" ); document.write( "Using the quadratic equation, I came up with the computer cost being $41.42 then divided $55,000 by that and came out with 1327.86 computers needed to be sold to obtain that profit of $55,000.
\n" ); document.write( "-------------------
\n" ); document.write( "-5x^2 + 1000x + 5000 = 55000
\n" ); document.write( "Divide both sides by -5 to get
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\n" ); document.write( "x^2 - 200x -1000 = -11000
\n" ); document.write( "-----------
\n" ); document.write( "x^2 - 200x + 10000 = 0
\n" ); document.write( "-----
\n" ); document.write( "x = 100
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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