Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 12 - Sequences; Induction; the Binomial Theorem - 12.1 Sequences - 12.1 Assess Your Understanding - Page 807: 39


$a_1=5$ $a_2=10$ $a_3=20$ $a_4=40$ $a_5=80$

Work Step by Step

If $a_n=2a_{n-1}$ and $a_1=5$, then $a_2=2a_1=2(5)=10$ $a_3=2a_2=2(10)=20$ $a_4=2a_3=2(20)=40$ $a_5=2a_4=2(40)=80$
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