Derivative and Chain Rule HELP!!!!

I've been stressing over these problems all week and my math professor has been always "busy" after school (I know... unreliable). So could anyone please help me with a few of these calculus problems and please explain how you got to the answer? I'm not going to type all of my homework because I also want to work on the rest of the problems so I am sure I am getting it.

Here are the directions and a couple problems:

**Use the derivative formulas and the chain rule: if To find the derivative of each of the functions below.**

10)

11)

12)

Could someone out there please help! We have a quiz on this on Friday and I need all the help I could get.