Find the nth term of the following sequences

Question 1:

4,16,36,64,100
4n2

Question 2:

1,4,9,16,25
n2

Question 3:

5,8,13,20,29
n2+4

Question 4:

9,12,17,24,33
n2+8

Question 5:

-7,-1,11,29,53
3n23n7

Question 6:

6,7,12,21,34
2n25n+9