The perimeter of a traffic sign must be 128 inches. It's length is 8 inches longer than the width. find the dimensions.

Answer 1

set x as the width;x+8 as the length
the formula for the perimeter is 2(l+w)
2[x+(x+8)]=2(2x+8)=4x+16=128
4x+16=128
4x=112
x=28
28by36