College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 9 - Section 9.2 - Arithmetic Sequences - 9.2 Assess Your Understanding: 8

Answer

Common difference = $1$ The first four terms are: $-4, -3, -2, -1$

Work Step by Step

To find the first four terms, substitute $1, 2, 3, 4$ for $n$ in the given formula. $s_1 = 1-5 = -4$ $s_2=2-5 = -3$ $s_3 = 3-5 = -2$ $s_4 = 4-5 = -1$ The terms increase by $1$ unit, so the sequence is arithmetic with a common difference of $1$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.