The length of a rectangle is x feet. Its width is x-7 feet. Draw and label a retangle to represent this sittuation then write three different expressions you could use to find its perimeter

Answer 1

perimeter = x + x + (x-7) + (x-7) <--- there's one : just adds up all the sides

= 2*x + 2*(x-7) <--- there's two : perimeter = 2*length + 2 *width

= 2x + 2x - 14 <-- distributive property

= 4x - 14 <--- there's three : combines like terms