SOLUTION: What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?

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Question 773413: What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
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S(n) = (n/2)(a + L)
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n = 8 ; a = 14 ; L = -3,919,104
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S(8) = 4(-3919090) = -15676360
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Cheers,
Stan H.
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