Precalc Help pls!!! I am stuck on this one so pls help

x not equal to 7

Step-by-step explanation:

(f ° g)(x)

= f (g(x))

So you are scrunching up the entire g(x) function and stuffing it into the x in the f(x).

This gives you

4/|x-7| see image.

x cannot be 7, bc if x is 7 the denominator would be 0 and that's never allowed. So the domain must be restricted and x not equal to 7.

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.