Answer
$22$
Work Step by Step
Need to calculate the value of $n$ or n-terms. In order to this, we have formula $a_n=a_1+(n-1)d$
Thus, $-83=1+(n-1)(-3-1)$
or, $-83=1-4(n-1)$
or, $-4n=-88$
This implies $n=22$, that is, n-terms $=22$
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 840: 53
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