1) Find function which generates finite sequence 7, 12, 17, 22, ..., 117 and find how many terms are in sequence.
2) Consider the sequence whose 3rd term is 13 and whose 7th term is 208.
(a) Suppose sequence is arithmetic. Determine function a(n) which explains sequence and determine 19th term of sequence.
(b) Suppose sequence is geometric. Determine function a(n) which explains sequence and determine 19th term of sequence.