I need help please, I don’t understand this is too complicated.

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Nikolas calculated the volume of the prism. his work is shown below.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)