Find the 17^^ term and the sum of the first 1 1 terms of each of the following:

(a) The arithmetic sequence 2, 7, 12, 17, ...

.

(b) The arithmetic sequence with a = 7\ and d = —3.

(c) The arithmetic sequence whose 5^^ term is 19 and whose 9'^

term is 47.

(d) The geometric sequence 5, 15, 45,

(e) The geometric sequence 3, — 4,

-f^, — A,

(f) The geometric sequence whose 5^^ term is 4 and whose S'''

term is ^.

AppendixLO1