For a geometric sequence or geometric series, the common ratio is the ratio of a term to the previous term. This ratio is usually indicated by the variable r. Example: The geometric series 3, 6, 12, 24, 48, . . . has common ratio r = 2.
Answer:
Choice C
Step-by-step explanation:

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12. 6$
13. 60 birds
14. 10 inch
Answer:
Step-by-step explanation:
3(3+4y+41r)