Question 800758
To find the perimeter of a rectangle, you must use the formula, P = 2l + 2w.

Given the values l = 2x - 1 and w = x + 2, we can express algebraically the perimeter.

{{{P = 2l + 2w}}}
{{{P = 2(2x-1) + 2(x+2)}}}
{{{P = (4x - 2) + (2x + 4)}}} (distributive property)
{{{P = 4x - 2 + 2x + 4}}}
{{{P = 6x + 2}}}

So the answer is P = 6x + 2.