The length of a side of square a is 7 more than the length of a side of square

b. if the perimeter of square a is 8 x + 32, what is the perimeter of square b

(8x+32) / 4 = 2x+8

2x+8=y+7 With y being the length of a side of square b

y=2x+1

Perimeter of square b: 4 (2x+1) = 8x+4

Or you could just do this:

32-4 (7) = 4 so Perimeter of b is 8x+4