Explanation:
you just need to put the value for t into the equation and then solve for s.
t = 3s + 2
t = 11
11 = 3s + 2
3s = 11 - 2 = 9
s = 3
t = 17
17 = 3s + 2
3s = 17 - 2 = 15
s = 5
t = 23
23 = 3s + 2
3s = 23 - 2 = 21
s = 7
t = 29
29 = 3s + 2
3s = 29 - 2 = 27
s = 9