Answer
$a_{13} = 33$
Work Step by Step
Arithmetic sequence: $-3,0,3,...$
$a_{1}= -3$
$d= 0-(-3) = 3$
Using the formula, $a_{n} = a_{1}+(n-1)d$
$a_{13} = -3+(13-1) (3)$
$= -3+(12)(3)$
$= -3+36$
$a_{13} = 33$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 11 - Section 11.2 - Arithmetic and Geometric Sequences - Exercise Set - Page 646: 16
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