I need help with these questions especially the third one is a bit hard to understand for me. You don't need to solve it. Just a little explanation

 

hi Yusuf,
Welcome to AAC.
As this is Homework please post your best attempt at answering the question, we can then help you.

E

 

hi Yusuf,
Welcome to AAC.
As this is Homework please post your best attempt at answering the question, we can then help you.

E

For the second question this is what i came up so far but i can't calculate the voltage gain for second stage.
For the third question, i just need a clean explanation for what i should draw or do.