Will mark as brainless if you answer correctly

Can someone me do math because i am having a breakdown rn because i don’t get it

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before