Answer:
32w^3 + 16x^2 - 8
Step-by-step explanation:
Perimeter = 2L + 2W
L = 9W^3 + 8W^2, W = 7w^3-4
2(9w^3 + 8w^2) + 2(7w^3 - 4)
= 18w^3 + 16w^2 + 14w^3 - 8
Combine like terms
32w^3 + 16w^2 - 8
4(x - 3) = -12
4(x) - 4(3) = -12
4x - 12 = 12
+ 12 + 12
4x = 24
4 4
x = 6
Number 3 is the correct answer
Tell me if you want further explanation
I'm pretty sure it's A.
But don't count on it