Intermediate Algebra (6th Edition)

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: 9



Work Step by Step

To find the $n$th term of an arithmetic sequence, we use the formula $a_n = a_1 + (n-1)d$ where $a_1$ is the first term and $d$ is the common difference $a_8 = 12 + (8-1)\cdot3 = 12+7\cdot3 = 12+21 = 33$
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