Answer
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Work Step by Step
The starting value $a_1$ is $3$. The common ratio $r$ is $\frac{6}{3}=2$.
The recursive formula is: $a_1=3; a_n=a_{n-1}.2$
The explicit formula is: $a_n=3.(2)^{n-1}$
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: 7
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