SOLUTION: Which expression describes the series 12,10,8,6, ... ?

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Question 836498: Which expression describes the series 12,10,8,6, ... ?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
That is a sequence, not a series (a series is the sun of the terms of a sequence).
Letting be the first term of the arithmetic sequence, we have .