Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Here are the first five terms of an arithmetic sequence.
1 5
9 13 17
(a) Find an expression, in terms of n, for the nth term of this sequence.