Use common logarithms or natural logarithms and a calculator to evaluate to four decimal places
-$\log _ { 20 } 66.6$
A) $1.4016$
B) $0.7135$
C) $3.1245$
D) $0.5224$

Question

Quizplus · Accepted Answer

To evaluate $\log _ { 20 } 66.6$, we can use the change of base formula: $\log _ { 20 } 66.6 = \frac{\log 66.6}{\log 20}$ or $\log _ { 20 } 66.6 = \frac{\ln 66.6}{\ln 20}$. Using a calculator, this evaluates to approximately $1.4016$.

Use Common Logarithms or Natural Logarithms and a Calculator to Evaluate