The perimeter of the sign is 11 ft
The area of the sign is 7.5ft^2
Hope this helps :)

Therefore, there are

millimeters in seven meters.
You must distribute first.
8 times (3x-2)= 24x-16
2 times (12x-5.5)= 24x-11
What you have left is
(24x-16)-(24x-11)
24x-24x=0
-16- -11=-5
The answer is -5