Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.2 Arithmetic Sequences and Series - 14.2 Exercise Set - Page 902: 6

Answer

$a_1=2.5$ $d=0.5$

Work Step by Step

In an arithmetic sequence, the common difference can be calculated as the difference of any two subsequent terms: $d=a_2-a_1=3-2.5=0.5$ The first term is: $a_1=2.5$.
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