Answer
See the definition below.
Work Step by Step
An arithmetic sequence is defined as a sequence which has a common difference $d$ and calculated as: $a_n=a_1+(n-1)d$
For example: $1,3,5,7....$ with common difference of $2$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 11 - Section 11.2 - Arithmetic Sequences - Exercise Set - Page 841: 72
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