Respuesta :

Given that,

[tex]f(x)=3x-5[/tex]

Therefore,

[tex]\begin{gathered} f(f(x))=f(3x-5) \\ =3(3x-5)-5 \\ =9x-15-5 \end{gathered}[/tex]

So,

[tex]f(f(x))=9x-20[/tex]