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7 October, 06:31

Determine if the sequence is algebraic or geometric, and find the common difference or ratio.

x 1 2 3 4

f (x) 3 9 27 81

Algebraic, common difference = 3

Algebraic, common difference = 6

Geometric, common ratio = 3

Geometric, common ratio = 6

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  1. 7 October, 06:54
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    Geometric

    Common ratio=3

    Step-by-step explanation:

    3,9,27,81 is geometric because there is a common ratio.

    We know there is a common ratio because a term divided by it's previous term is the same each time.

    That is

    81/27=3

    27/9=3

    9/3=3.

    So the common ratio is 3.
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