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if you are suppose to find the number of terms in a sequence were the d= multiplying by -3, how do you do then?
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by Petra013 at October 13, 2009

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If you are talking about multiplying, then you are talking about a geometric (not arithmetic) sequence. I think this video will help you understand: http://www.brightstorm.com/d/math/s/precalculus/u/sequences-and-series/t/geometric-sequences Hope that helps.

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El Jefe October 13, 2009