Problem 2 of 7
Write a recursive arithmetic sequence rule for the terms 20, 15, 10, 5.
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identify first term and common difference.
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Terms must have a constant difference.
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Solution
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1. Find the first term.
2. Compute the common difference between consecutive terms.
3. Write a recursive rule using the previous term plus the difference.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Geometric ratio rule for arithmetic terms.