document.write( "Question 329163: A museum director is trying to maximize profit. Current daily attendance is 500 people paying $30 each for a ticket. X represents the number of $5 increases in ticket price. How many $5 increases will provide the maximum income for the museum? Maximum capacity of the museum is 500 people which he meets daily.\r
\n" ); document.write( "\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "I(x) = (500 – x) (500 + 5x)\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #235959 by nyc_function(2741)\"\" \"About 
You can put this solution on YOUR website!
I(x) = (500 - x)(500 + 5x) become y = -5x^2 + 2000x + 250,000 after multiplying the left side of the original equation. \r
\n" ); document.write( "\n" ); document.write( "Let y = 0 and solve for x.\r
\n" ); document.write( "\n" ); document.write( "Now, use the quadratic formula where a = -5, b = 2000 and c = 250,000 to solve for x. Can you take it from here?
\n" ); document.write( "
\n" );