Writing expressions

Question

The length of a rectangle is 4 times it’s width. Write three different expressions to describe its perimeter.explain how you wrote each expression

Answer 1

l = 4w

p = 2l + 2w

p = 2(2w) + 2w

p = 4w + 2w

p = 6w

l = 4w, w = l/4

p = 2l + 2w

p = 2l + 2(l/4)

p = 2l + 2l/4

p = 2l + l/2

p = (2 1/2)l