SOLUTION: what would the explicit equation be for the sequence 117, 23.4, 4.68, …

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Question 1012797: what would the explicit equation be for the sequence 117, 23.4, 4.68, …
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
117, 23.4, 4.68, …

23.4/117 = 234/1170 = 0.2

4.68/23.4 = 468/2340 = 0.2 

So it's a geometric sequence with a1 = 117 and r = 0.2

an = a1rn-1

an = 117(0.2)n-1

Edwin
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