Question

The length of a rectangle is twice its width. Write two equivalent expressions for the perimeter of the rectangle. Justify your response using properties of operations and the order of operations.

Answer 1

If the length is twice the width, then we could write $l = 2w$ and $w = w$. For perimeter, there are two length measures and two width measures.

$p = 2l + 2w$

This can be converted into

$2(2w) + 2(w) = p$

Hope I answered your question.