my first question may seem silly to you, but consider it seriously: do you understand what means.

i do not like problems like this, because you usually have several answers that are correct. but i bet this is the answer they are looking for:

and

now see if you can tell why that answer makes sense, after considering the question i asked you earlier

if you think you got it, try this one yourself and tell us your answerAND this one confounds me as well

Express the function in the form f compose g. (Use only elementary functions, but not the identity function, g(x) = x.)