If f(x) = 3x and g(x) = 2x-f find (f o g)(x)

Question

anonymous · Answer

Tell me if I'm wrong but dont you just replace what is on the gx onto the x of f(x)

anonymous · Answer

You are right

hero · Answer

f o g(x) = f(g(x))

f(x) = 3x
g(x) = 2x-f

f(g(x) = 3(2x-f)

anonymous · Answer

Oh ok f o g mean f of g
so if you have f(x) 
f o g is now f(gx)

anonymous · Answer

f(x) means f of x if you didn't know before

anonymous · Answer

A. = -16x
B. = 6x-6
C. = 6x-18

hero · Answer

Romero, if you want, you can also explain what f of x means as well.

hero · Answer

If those are the answer choices, then I'm 100% certain that you wrote the original equation for g(x) incorrectly @Lib Libs

hero · Answer

f o g(x) = f(g(x))

f(x) = 3x
g(x) = 2x-6

f(g(x) = 3(2x-6) = 6x - 18

hero · Answer

That's just my guess at what g(x) is, but you can clear it up by stating that it is

anonymous · Answer

you explain what f of x means

anonymous · Answer

Thank you!~

hero · Answer

Libs, can you verify the correct expression for g(x) ?

hero · Answer

Please post your problem again. I don't believe that g(x) = 2x-f

hero · Answer

What I posted above was a complete assumption

anonymous · Answer

If f(x) = 3x and g(x) = 2x-f find (f o g)(x)