2 of estion If f(x) = 3r9 - 8x, then which of the following is equivalent to f'(x)? Select one: O f'(x) = 3x0 +8 O f'(x) = 27x8 O f'(x) = 3r8 - 8 O f'(x) = 27x8 - 8 O f'(x) = 3r8 - 8x