Answer
$\dfrac{a_1}{1-r}$
Work Step by Step
RECALL:
An infinite geometric series whose $|r| \lt 1$ converges to the sum:
$\dfrac{a_1}{1-r}$
Thus, the missing expression in the given statement is:
$\dfrac{a_1}{1-r}$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 9 - Section 9.3 - Geometric Sequences; Geometric Series - 9.3 Assess Your Understanding - Page 664: 4
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