Answer
The answer is both option (a) $\frac{\log 7}{\log 2}$ and (b) $\frac{\ln 7}{\ln 2}$
Work Step by Step
According to the 'Change of base law', $\log_{2} 7$ can be written correctly as both $\frac{\log 7}{\log 2}$ or $\frac{\ln 7}{\ln 2}$.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 12 - Section 12.7 - Common Logarithms, Natural Logarithms, and Change of Base - Vocabulary and Readiness Check - Page 889: 7
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