document.write( "Question 1090563: The demand function for a new comic book is p(x)=-5x+30 where p(x) represents the selling price, in thousands of dollars and x is the number kd comic books sold, in thousands. What is the maximum revenue? Revenue =[p(x)](x) \n" ); document.write( "

Algebra.Com's Answer #705071 by Fombitz(32388) $\"\"$ $\"About$

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$\"R%28x%29=%2830-5x%29x\"$
\n" ); document.write( " $\"R%28x%29=-5x%5E2%2B30x\"$
\n" ); document.write( "Complete the square,
\n" ); document.write( " $\"R%28x%29=-5%28x%5E2-6x%29\"$
\n" ); document.write( " $\"R%28x%29=-5%28x%5E2-6x%2B9%29%2B5%289%29\"$
\n" ); document.write( " $\"R%28x%29=-5%28x-3%29%5E2%2B45\"$
\n" ); document.write( "So the revenue function is in vertex formula.
\n" ); document.write( "The maximum of $\"45\"$ occurs when $\"x=3\"$ .
\n" ); document.write( " \n" ); document.write( "

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