3 years ago

An arithmetic sequence has this recursive formula:

Mathematics

1 answer:

alexdok [17]3 years ago

7 0

Answer: choice C

Step-by-step explanation:

an=a1+d*(n-1)

an=9+(n-1)*(-3)

you can check the answer by plugging in the numbers, for example if n=1, an=9, if n=2 an=6 which is correct.

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