Answer
$a_8=\frac{4117715)}{128}$
Work Step by Step
$a_n=a_1r^{n-1}$
$a_1=5,~~r=\frac{7}{2}$
$a_8=5(\frac{7}{2})^{8-1}=5(\frac{7}{2})^7=5.\frac{823543}{128}=\frac{5(823543)}{128}=\frac{4117715}{128}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.3 - Geometric Sequences and Series - 11.3 Exercises - Page 795: 24
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