The answer to your problem is x=3
27, 0, 8, 64
All u need to do is cube all the numbers in the domain
If r = -3 and s = 5:
(r^-4)(s^2) = (-3^-4)(5^2) = (1/81)(25) = 25/81
If r = 5 and s = -3:
(r^-4)(s^2) = (5^-4)(3^2) = (1/625)(9) = 9/625
A, D, F is the correct answers! Have a Merry Christmas!