Question

A rectangle has side lengths (x +5) feet and (2x−3) feet. Write a linear expression in simplest form to represent the perimeter. Find the perimeter if the value of x is 6 feet.

Answer 1

6x+4 ft

40 ft

Explanation:

The perimeter of a rectangle is

P = 2(l+w)

= 2( x+5 + 2x-3)

Combine like terms

= 2(3x+2)

Distribute

=6x+4

Let x= 6

= 6*6+4

= 36+4

= 40