Geometric Series Formula Quizmaster : MATHguide
Geometric Series Quizmaster: MATHguide
Review the Lesson | MATHguide homepage Updated December 4th, 2016


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Use the first 7 terms of the following geometric series for the problem below:

-18 - 68.4 - 259.92 - 987.696 + ...

What is the value of the common ratio? r =
What is the sum of the first 7 terms?
(to the nearest tenth)
S7 =