Find the next three terms in each sequence. Then, write the rule for finding the rith tem 15. 10 , 15 ,20,25,\ \ \ 16. 20, 16, 12, 8, 18. 2, 5, 8, 11, 20. 5/7, 1, 9/7, 11/7 22. - 10, - 4 2, 24. 1, -3, 9, -27, Rule: 26. 2/3, 3/4, 4/5 Rule: 23. 1, 3, 9, 27, Rule: 25. 1, 8, 27, 17. 3, 5, 7, 9, 19. 1/2, 1/3, 1/4, 1/5 21. -2, -4, -6, Rule: