Answer
The sequence is not geometric.
Work Step by Step
$r=\frac{8}{10}=\frac{4}{5}$
$r=\frac{6}{8}=\frac{3}{4}$
$r=\frac{4}{6}=\frac{2}{3}$
There is no common ratio. So, the sequence is not geometric.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 7 - Exponents and Exponential Functions - 7-8 Geometric Sequences - Lesson Check - Page 470: 3
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