Answer
4.7
Work Step by Step
The formula $R=\log(\frac{a}{T})+B$ is used.
The values given are substituted into the formula as follows:
$R=\log(\frac{450}{4.2})+2.7\approx4.7$.
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 - Exercise Set - Page 891: 78
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