Respuesta :
[tex]\bf \begin{cases}
f(x) = x^2 + 1\\\\
g(x) = 3x + 1
\end{cases}\quad
\begin{cases}
f(1)=\boxed{1}^2+1\to &\boxed{?}\\\\
g(4)=3(\boxed{4})+1\to &\boxed{?}
\end{cases}
\\\\\\
2f(1)=2\cdot \boxed{?}\qquad \qquad 3g(4)=3\cdot \boxed{?}[/tex]