Answer
$a_{11}=72$
Work Step by Step
The arithmetic sequence $2,9,16,...$ has $a_1=2$ and $d=7$. Using $a_n=a_1+(n-1)d$, then the eleventh term is
\begin{array}{l}
a_{11}=2+(11-1)(7)
\\
a_{11}=2+70
\\
a_{11}=72
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 11 - Cumulative Review - Page 670: 45
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