Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.
-$\log _ { 3 } 25$
A) $0.34$
B) $2.93$
C) $1.10$
D) $3.22$

Question

Quizplus · Accepted Answer

The Change-of-Base Formula allows us to rewrite the logarithm in a form that can be calculated using a standard scientific calculator: $\log _ { 3 } 25 = \frac {\log _ { 10 } 25}{\log _ { 10 } 3}$. Using a calculator to evaluate this expression gives approximately 2.93.

Use the Change-Of-Base Formula and a Calculator to Evaluate the Logarithm