Question: 18. Suppose a sequence has first term 2 and third term 18. (a) If the sequence is arithmetic, find the common difference , and list

18. Suppose a sequence has first term 2 and third term 18. (a) If the sequence is arithmetic, find the common difference , and list the first five terms of the sequence. (b) If the sequence is geometric, find two possible values for the common ratio , and list the first five terms of the geometric sequence in each case

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