Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.2 - Arithmetic Sequences and Partial Sums - 11.2 Exercises - Page 786: 39


$a_1=7$ $a_2=5$ $a_3=3$ $a_4=1$ $a_5=-1$

Work Step by Step

$a_1=7,~~a_{n+1}=a_n-2$ $a_2=a_1-2=7-2=5$ $a_3=a_2-2=5-2=3$ $a_4=a_3-2=3-2=1$ $a_5=a_4-2=1-2=-1$
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