Find terms of an arithmetic sequence

Each term is the one before plus the common difference.

1. Find the common difference of the sequence −10, −15, −20, −25, …
2. Find the common difference of the sequence −8, −3, 2, 7, …
3. Find the common difference of the sequence 7, 9, 11, 13, …
4. Find the common difference of the sequence 3, 12, 21, 30, …
5. An arithmetic sequence has a first term of −7 and a common difference of 7. Find the 5th term.
6. An arithmetic sequence has a first term of −2 and a common difference of 5. Find the 5th term.
7. An arithmetic sequence has a first term of −4 and a common difference of −1. Find the 5th term.
8. An arithmetic sequence has a first term of 9 and a common difference of 4. Find the 7th term.
9. An arithmetic sequence has a first term of −12 and a common difference of −6. Find the 13th term.
10. An arithmetic sequence has a first term of 10 and a common difference of 6. Find the 15th term.
11. An arithmetic sequence has a first term of −13 and a common difference of 5. Find the 27th term.
12. An arithmetic sequence has a first term of 12 and a common difference of 9. Find the 28th term.
13. In the arithmetic sequence −13, −5, 3, …, which term number is 27?
14. In the arithmetic sequence 15, 10, 5, …, which term number is −70?
15. In the arithmetic sequence −7, −1, 5, …, which term number is 95?
16. In the arithmetic sequence 14, 15, 16, …, which term number is 24?
17. In the arithmetic sequence −7, −10, −13, …, which term number is −19?
18. In the arithmetic sequence 4, 1, −2, …, which term number is −11?
19. In the arithmetic sequence 2, 12, 22, …, which term number is 102?
20. In the arithmetic sequence −8, −21, −34, …, which term number is −177?