A = BL
P = 2(B + L)
A = area
P = perimeter
B = width
L = length
A = 4(2x - 4)
P = 2(4 + (2x - 4))
Need some other bit of information to solve, like a relationship between area and perimeter . . but i can't solve for x, A, or P . . when i can only develop two equations with the given problem information . . so . .that's all :)