Answer:
22 units
Step-by-step explanation:
The perimeter is all the sides of any polygon added up.
A rectangle has 4 sides, but we only need two sides to solve this because a rectangle has symmetry
There are two ways
Method 1:
x+2 + x-1 + x+2 + x-1 OR 2(x+2) + 2(x-1)
simplify: 2x + 4 + 2x - 2
4x +2
Plug 5 into x: 4(5) + 2
Answer: 22
Method 2:
plug in x to get the sides: 7 and 4
now add: 7 + 7 + 4 + 4 OR 2(7) + 2(4)
simplify: 14 + 8
Answer: 22
