Find ​(f circle ◦​g)(x) and ​(g circle ◦​f)(x) and the domain of each. ​f(x) equals = nothing x plus + 9 9​, ​g(x) equals = nothing x minus − 9

Answer 1

Do you mean f(x) = x + 9 and g(x) = x - 9

If so then f(g(x)) = x- 9 + 9 = x

And g(f(x)) = x + 9 - 9 = x

The functions are inverses of each other