Please help me answer the questions that are circled, I really need help!

Here:

Step-by-step explanation:

23. f(x) = and g(x) =

24. f(x) = and g(x) =

28. f(x) = and g(x) =

29. f(x) = and g(x) =

Basically, you try to find a function contained inside a function if that makes sense. For example in question 23, g(x) itself is a function =  . Same with f(x) = . In this case, when we try to fo f(g(x)), we are basically replacing x in the f(x) function by the equation in g(x). Hope this makes sense.