Hey there magentarita,

Since the perimeter of the site is rectangular, it is of the form:

From the question...

Alternately, the wording of the question could be seen as a little ambiguous for the following reasons...

"The length of the rectangular site is 2 pole measures increased by 3 feet...

Does this mean, instead, 2(x + 3)?

If this is the case, then the perimeter is:

In general math questions, however, I would favour the initial reading.

Trust this helps.