Answer
$a_{25}=-73$
Work Step by Step
$a_n=(-1)^n(3n-2)$
$a_{25}=(-1)^{25}[3(25)-2]=(-1)(75-2)=(-1)73=-73$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.1 - Sequences and Series - 11.1 Exercises - Page 777: 23
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