Do you notice a pattern among these numbers, Nicole? Each successive term is three times the previous term. That makes this a geometric sequence. The common ratio of this sequence is 3. The formula for finding the nth term of a geometric sequence is given by the formula:
an = a1 * rn - 1
where a1 = the first term of the sequence, and r is the common ratio. We know that r = 3 now, and the first term is 2, so you can plug these values in to get the rule.
