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Find an Explicit Rule for the Nth Term of the Sequence

Question 32

Multiple Choice

Find an explicit rule for the nth term of the sequence.
- 4,12,36,108,…4,12,36,108 , \ldots


A) an=3⋅4n−1a _ { n } = 3 \cdot 4 ^ { n - 1 }
B) an=4⋅3na _ { n } = 4 \cdot 3 ^ { n }
C) an=4⋅3n−1a _ { n } = 4 \cdot 3 ^ { n - 1 }
D) an=4⋅3n+1a _ { n } = 4 \cdot 3 ^ { n + 1 }

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