3. Rico is designing a garden, and in order to keep the rabbits out, he knows that he will need a
rectangular fence for his garden. He knows that because he is limited to only having a certain length of
fencing with which to work, if the garden has a width (in feet) of x, it must have an area of 30x - x^2
a. Completely factor the area to determine what the length and width of the garden must be in terms
of x.