Find the nth term of the following sequences

Question 1:

3,6,9,12,15
3n

Question 2:

5,11,17,23,29
6n−1

Question 3:

6,11,16,21,26
5n+1

Question 4:

9,20,31,42,53
11n−2

Question 5:

9,8,7,6,5
10−n

Question 6:

17,8,-1,-10,-19
26−9n