Find the nth term of the following sequences

Question 1:

38,37,36,35,34
39n

Question 2:

17,5,-7,-19,-31
2912n

Question 3:

1,2,3,4,5
n

Question 4:

0,10,20,30,40
10n10

Question 5:

18,10,2,-6,-14
268n

Question 6:

36,31,26,21,16
415n