Find an Explicit Rule for the Nth Term of the Sequence

question 69

Multiple Choice

Find an explicit rule for the nth term of the sequence.
-The second and fifth terms of a geometric sequence are 9 and 243 , respectively.

• A) \(a _ { n } = 3 \cdot 3 ^ { n + 3 }\)
• B) \(a _ { n } = 3 \cdot 3 ^ { n - 2 }\)
• C) \(a _ { n } = 3 \cdot 3 ^ { n - 1 }\)
• D) \(a _ { n } = 3 \cdot 3 ^ { n + 1 }\)

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