Respuesta :

Given

[tex]\begin{gathered} f(x)=3x-3 \\ g(x)=-x \end{gathered}[/tex]

Then,

[tex]\begin{gathered} g(f(x))=g(3x-3) \\ =-(3x-3) \\ =3-3x \end{gathered}[/tex]

Hence, the correct option is (B)