document.write( "Question 1202839: An ice cream shop sells 150 vanilla ice cream cakes per month at a price of $40 each. A customer survey indicates for each $1 decrease in price, sales will increase by 5 cakes.
\n" ); document.write( "Determine a revenue function based on the number of price decreases.
\n" ); document.write( "Determine the marginal revenue for the revenue function developed in part a).
\n" ); document.write( "When is the marginal revenue function equal to zero? What is the total revenue at this time? How can the owners use this information? \n" ); document.write( "
Algebra.Com's Answer #837996 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "PRICE       HOW MANY         COST\r\n" );
document.write( " 40          150\r\n" );
document.write( " 40-1        150+5\r\n" );
document.write( " 40-2*1      150+2*5\r\n" );
document.write( " 40-3*1      150+3*5       (40-3*1)(150+3*5)\r\n" );
document.write( ".\r\n" );
document.write( ".\r\n" );
document.write( ".\r\n" );
document.write( " 40-n       150+5n        (40-n)(150+5n)\r\n" );
document.write( "

\n" ); document.write( "One way to continue this way is to use n for how many $1 increases, and look at the
\n" ); document.write( "cost expression for finding the maximum revenue. (Quadratic in n). \n" ); document.write( "
\n" );