I have been working this problem for awhile and cannot seem to solve it even though its probably easier than I think...
There is a rectangular garden that needs fencing. For one side of the fencing wooden slats will be used costing 2 dollars per foot, the other three sides will use metal fencing costing 8 dollars per foot. If the total money to spend on fencing in $700, what is the largest area he can make.
I made the equation 2x+8x+2(8y)
(2x) for the one wooden side, (8x) for the metal side opposite the wooden side, and (2(8y)) for the two metal sides that face opposite each other.