document.write( "Question 951889: You are starting a business that sells air filters for homes. Your startup costs for the business are 1250 and each air filter costs $40. If u sell the filters for 60$ how many must you sell to break even? \n" ); document.write( "

Algebra.Com's Answer #581325 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
The break-even point is where
\n" ); document.write( "cost, $\"+c+\"$ = revenue $\"+r+\"$
\n" ); document.write( "Let $\"+n+\"$ = number sold
\n" ); document.write( " $\"+c+=+1250+%2B+40n+\"$
\n" ); document.write( " $\"+r+=+60n+\"$
\n" ); document.write( "---------------------
\n" ); document.write( " $\"+c+=+r+\"$
\n" ); document.write( " $\"+1250+%2B+40n+=+60n+\"$
\n" ); document.write( " $\"+20n+=+1250+\"$
\n" ); document.write( " $\"+n+=+62.25+\"$
\n" ); document.write( "You can't sell 1/4 of of air filter, so
\n" ); document.write( "you need to sell $\"+63+\"$ to
\n" ); document.write( "break even
\n" ); document.write( "---------------------
\n" ); document.write( "Here's plots of $\"+c%28x%29+\"$ and $\"+r%28x%29+\"$ :
\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-10%2C+80%2C+-500%2C+5000%2C+40x+%2B+1250%2C+60x+%29+\"$
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