Can someone please help. It’ll also be nice if you show your work.

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path