document.write( "Question 319919: The profit P (in dollars) generated by selling x units of a certain commodity is given by P(x) = -1500 +12x-0.0004x^2\r
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\n" ); document.write( "\n" ); document.write( "B. How many units must be sold to generate it?
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Algebra.Com's Answer #229883 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
You can find the max. value by putting the equation into vertex form,\"a%28x-h%29%5E2%2Bk\", by completing the square.
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\n" ); document.write( "\n" ); document.write( "\"+P%28x%29+=-0.0004x%5E2+%2B12x-1500\"
\n" ); document.write( "\"P%28x%29=-0.0004%28x%5E2-30000x%29-1500\"
\n" ); document.write( "\"P%28x%29=-0.0004%28x%5E2-30000x%2B225000000%29-1500%2B90000\"
\n" ); document.write( "\"P%28x%29=-0.0004%28x-15000%29%5E2%2B88500\"
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\n" ); document.write( "The minimum occurs at the vertex.
\n" ); document.write( "a)\"Pmax=88500\"
\n" ); document.write( "b)\"x\" at \"Pmax\":\"x=15000\"
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