x^3 − 2y^2 − 3x^3 + z^4
Plug in 3 for x, 5 for y, and -3 for z (given)
(3)^3 -2(5^2) - 3(3^3) + (-3)^4
Simplify
(3)^3 = 3 x 3 x 3 = 27
-2(5^2) = -2 x 25 = -50
-3(3^3) = -3 x 27 = -81
(-3)^4 = -3 x -3 x -3 x -3 = 9 x 9 = 81
Combine all the terms
27 + (-50) - 81 + 81
27 - 50 - 81 + 81
-23 + 0
-23
-23, or (C) is your answer
hope this helps
