- Find the nth term of an arithmetic sequence, when n is given and when the nth term is given. - Given two terms in an arithmetic sequence, find the common difference. - Find the sum and the first n terms of an arithmetic sequence. [SLIDE 1] [SLIDE 2] [SLIDE 3] [SLIDE 4] [SLIDE 5] [SLIDE 6] [SLIDE 7] [SLIDE 8] [SLIDE 9]