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Write a recursive formula for an arithmetic sequence whose 4th term is 5 and whose 7th...

Write a recursive formula for an arithmetic sequence whose 4th term is 5 and whose 7th term is -22. a)a↓1=32, a↓n=a↓n-1-9 b)a↓1=32, a↓n=a↓n-1-27 c)a↓1=56, a↓n=a↓n-1-17 d)a↓1=5, a↓n=a↓n-1-22

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