Answer
$a_{5}=5000;$
$a_{n}=8\times \left( -5\right) ^{n-1}$
Work Step by Step
$a_{5}=a_{1}\times r^{4}=8\times \left( -5\right) ^{4}=5000;$
$a_{n}=a_{1}\times \left( r\right) ^{n-1}=8\times \left( -5\right) ^{n-1}$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 11 - Further Topics in Algebra - 11.3 Geometric Sequences and Series - 11.3 Exercises - Page 1034: 16
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