Answer:
The answer to your question is before substitution 8x + 2
after substitution 18 ft
Step-by-step explanation:
Data
Length of the base = 3x + 1
Length of the height = x
x = 2 ft
Formula
Perimeter of a rectangle = 2(base) + 2(height)
Substitution
Perimeter of a rectangle = 2(3x + 1) + 2(x)
Simplification
Perimeter of a rectangle = 6x + 2 + 2x
Perimeter of a rectangle = 8x + 2
Substitution of x
Perimeter of a rectangle = 8(2) + 2
Simplification
Perimeter of a rectangle = 16 + 2
= 18 ft
