Answer:
It's 14
Step-by-step explanation:
calculation for the nth term
1. 5 =5+0 times 3=5
2. 5+3 =5+1 times 3=8
3. 5+3+3 =5+2 times 3=11
4. 5+3+3+3 =5+3 times 3= 14
