Question

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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Answer 1

Answer is c reason it is what i is

Answer 2

Geometric

Common ratio=3

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.