SOLUTION: Find the nth term formula for the arithmetic sequence: 20,17,14,11

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Question 379724: Find the nth term formula for the arithmetic sequence: 20,17,14,11
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

Note: for an arithmetic sequence: a%5Bn%5D+=+a%5B1%5D+%2B+%28n-1%29d 

where d is the difference between the terms of the sequence

nth term formula for the arithmetic sequence: 20,17,14,11

In this example d = -3

    a%5Bn%5D+=+20+-+%28n-1%293