Given that f(x) = 6(x - 1). Choose the correct statement.

Given:-
[tex]f(x)=6(x-1)[/tex]To find:-
[tex]f^{-1}(12)[/tex]So now,
[tex]\begin{gathered} y=6(x-1) \\ y=6x-6 \\ y+6=6x \\ x=\frac{y+6}{6} \end{gathered}[/tex]So now,
[tex]f^{-1}(12)=\frac{12+6}{6}=\frac{18}{6}=3[/tex]So the correct option is option c.