Question

Can anyone help me with this multiple choice question?

Answer 1

Here

Answer 2

what have you tried?

Answer 3

Nothing because i don't even know how to do it or where to start :/

Answer 4

to get (f o g)(x),
plug in x= g(x) in f(x).

confusing?
example : f(x) = 12x^2-5
g(x) = x+7,

plug in x = 'x+7' in f(x)

so,
(f o g)(x) = 12(x+7)^2 -5

I just replaced x by x+7 in the f(x) expression.
got this?

Answer 5

then expand 12(x+7)^2 -5, which will lead you to the answer!

Answer 6

So it's b?

Answer 7

can you show your work how you got b ?
because its not b

Answer 8

but you're very close :)