document.write( "Question 1151421: If the revenue function for selling q widgets is r(q) =q.(4187-5q) dollars, find the marginal revenue function, and find the marginal revenue when q=135
\n" ); document.write( "MR=R'(q)= ?
\n" ); document.write( "R'(135) =?
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Algebra.Com's Answer #773166 by MathLover1(20850)\"\" \"About 
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If the revenue function for selling q widgets is \r
\n" ); document.write( "\n" ); document.write( "\"r%28q%29+=q%284187-5q%29\" dollars, \r
\n" ); document.write( "\n" ); document.write( "find the \"marginal\"\"+revenue\" function, and find the marginal revenue when \"q=135\":\r
\n" ); document.write( "\n" ); document.write( "we can find marginal revenue by finding the derivative of \r
\n" ); document.write( "\n" ); document.write( "\"r%28q%29+=q%284187-5q%29\"
\n" ); document.write( "\"r%28q%29+=4187q-5q%5E2\"\r
\n" ); document.write( "\n" ); document.write( "derivative is:\r
\n" ); document.write( "\n" ); document.write( "\"R\"'\"%28q%29+=4187-2%2A5q\"
\n" ); document.write( "\"MR=R\"'\"%28q%29=++4187+-10q\"\r
\n" ); document.write( "\n" ); document.write( "then\r
\n" ); document.write( "\n" ); document.write( "\"R\"'\"%28135%29+=4187+-10+%2A135=4187-1350=2837\"\r
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