SOLUTION: Find the sum of the geometric sequence where the first term is 3, the last term is 46 875, and the common ratio is 5.

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Question 981999: Find the sum of the geometric sequence where the first term is 3, the
last term is 46 875, and the common ratio is 5.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
How many terms?
3%2A5%5Ep=46875, and here, the number of terms is p+1.
5%5Ep=46875%2F3=15625

5%5Ep=25%2A625=125%5E2=5%5E3%2A5%5E3=5%5E6
p=6
and this means p%2B1=7 terms.

Lookup or derive the summation formula:
highlight%283%28%281-5%5E7%29%2F%281-5%29%29%29

58593