Natalia is writing a recursive formula to represent the sequence. 8 comma 12 comma 18 comma 27 comma dot dot dot What value should she use as the common ratio in the formula?

For a geometric sequence, divide each term by the term before it to find the common ratio. Here, 12 ÷ 8 = 3/2, and 18 ÷ 12 = 3/2, so the common ratio is 3/2. Natalia should use 3 halves, choice C.

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