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Write a recursive formula for the sequence: 25, 5, 1,...

O a (1)=25 and a (n) = a(n − 1)
O a (1)=25 and a (n) = 5 a(n-1)
O a (1)=25 and a (n) = a(n-1) +5
O a (1) = 25 and a (n) = a(n-1) - 20

Write a recursive formula for the sequence: 25, 5, 1,... O a (1)=25 and a (n) = a-example-1

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Answer: B)

The recursive formula for the sequence 25, 5, 1,… is a(1) = 25 and a(n) = 5 * a(n-1) for n > 1.

Step-by-step explanation:

This is because each term is 1/5 of the previous term. So, the sequence is a(1) = 25, a(2) = 5, a(3) = 1, a(4) = 1/5, a(5) = 1/25, and so on. Does that help?

User Collin Graves
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