Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 12 Sequences and Series - 12.3 Analyze Geometric Sequences and Series - 12.3 Exercises - Quiz for Lessons 12.1-12.3 - Page 817: 6

Answer

$a_n=n \times 9n= 9n^2$

Work Step by Step

Given : $9,36, 81, 144,225$ Re-arrange as: $9(1), 18(2), 27(3), 36(4), 45(5)$ The above sequence yields the relation: $a_n=n \times 9n= 9n^2$
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