Question

Julie plans to put a fence around her square shaped backyard. The length of one side measures 2n-3feet. Write a simplified expression to represent the perimeter of the backyard. 

Answer 1

We have the following:

Since it is a square, the sides are equal, and the perimeter is the sum of all the sides, therefore it would be

$\begin{gathered} p=4\cdot l \\ l=2n-3 \\ \text{replacing} \\ p=4\cdot(2n-3) \\ p=8n-12 \end{gathered}$

The answer is 8n - 12