document.write( "Question 134440: How many tractors need to be sold for a profit of $20,000\r
\n" ); document.write( "\n" ); document.write( "n = number of tractors\r
\n" ); document.write( "\n" ); document.write( "P(n)=2.7(n)+9(n)-3\r
\n" ); document.write( "\n" ); document.write( "I tried to use the quadratic formula but I can't figure it out. I know that the answer is supposed to be 7.
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Algebra.Com's Answer #98346 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
You don't have a quadratic equation posted.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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