Respuesta :

It depends of wich function you are talking about:
For example, if [tex]f(x)=x^2[/tex], just put [tex]x=6[/tex] into formula:

[tex]f(6)=6^2=36 [/tex]

And multiply by 3:

[tex]3f(6)=108[/tex]

So, the answer is [tex]3f(6)[/tex].

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