Posted by Brandon on .
One hundred feet of fencing is available to make a rectangular dog pen against an existing wall. What are the dimensions of the pen that will yield the maximum area?
I need all of the steps to get to the answer.

Algebra 2 
Ms. Sue,
I told you that the maximum area is a square.
Find the length of a square with a perimeter of 100. Then square that number to find the area.