Answer
2
Work Step by Step
$\log_2 60$ - $\log_2 15$
Apply the Second Law of Logarithms
$\log_2 (\frac{60}{15})$
$\log_2 4$
Rewrite 4
$\log_2 2^2$
Since the base and the number are the same, we remove everything except the exponent
= 2
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 4 - Section 4.4 - Laws of Logarithms - 4.4 exercises - Page 359: 11
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