Answer :

nobillionaireNobley
17. sequence: 8, 17, 26, 35, . . . is an arithmetic sequence with first term (a) = 8 and common difference (d) = 9 (i.e. increases by 9)

nth term of AP = a + (n - 1)d = 8 + (n - 1) * 9 = 8 + 9n - 9 = 9n - 1.

Required equation = 9n - 1