find the specific term of each Anthmetic sequence.

1. 1.4, 4.5, 7.6...; the 41st term
2. 9, 18, 17, the 15th term
3. 14, 6, -2 ... 27th term
4. 3, 3. 25, 3.5 16th term
5. 1, 4, 7… 18th term