Answer
See below.
Work Step by Step
The sum of an infinite geometric sequence can be obtained by the formula $S_n=\frac{a_1}{1-r}$ where $a_1$ is the first term and $r$ is the common ratio and $|r|\lt1$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.