Find the next three terms in each sequence. Then, write the rule for finding the rith tem

15. 10 , 15 ,20,25,
Rule:

16. 20, 16, 12, 8,
Rule:

18. 2, 5, 8, 11,
Rule:

20. 5/7, 1, 9/7, 11/7
Rule:

22. - 10, - 4 2,
Rule:

24. 1, -3, 9, -27,

Rule:

26. 2/3, 3/4, 4/5

Rule:

23. 1, 3, 9, 27,

Rule:

25. 1, 8, 27,
Rule:

17. 3, 5, 7, 9,
Rule:

19. 1/2, 1/3, 1/4, 1/5
Rule:

21. -2, -4, -6,

Rule:

B. Solve each problem.