Find the common ratio of the give sequence, and write an exponential function which represents the sequence. Use n=1, 2, 3, ...

A) 3; f (n) = 81^n-1

B) 3; f (n) = 81 (3) ^n-1

C) 1/3; f (n) = 81 (3) ^n-1

D) 1/3; f (n) = 81 (1/3) ^n-1

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What is the answer to this question 8 1/2 - 7 1/4

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Write in expanded form six hundred twenty six and fourteen thousandths

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