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18 March, 19:15

32, 16, 8, 4, 2, ...

Find the common ratio of the given sequence, and write an exponential function which represents the sequence.

A. 2; f (x) = 32 (2) ^x-1

B. 1/2; f (x) = 32^x-1

C. 2; f (x) = 32 (1/2) ^x-1

D. 1/2; f (x) = 32 (1/2) ^x-1

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Answers (1)
  1. 18 March, 22:28
    0
    The common ratio is 1/2 and the first term is 32

    f (x) = A1 * (common ratio) ^x-1

    f (x) = 32 * (1/2) ^x-1

    Your answer is D.
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