Writing an equation

Question

the width of the rectangle shown is x inches, and the length is (3x+2) inches. write an expression representing the perimeter of the rectangle?

Answer 1

If the perimeter of a rectangle is given by...

P = 2 x (Length + Width)

Using Width = x and Length = 3x+2

P = 2 * (4x + 2) = 8x + 4