5.4 Evaluating logarithms using changeofbase formula
Evaluating logarithms using changeofbase formula
Lessons
Notes:
• changeofbase rule:$\log_ba = \frac{\log_xa}{\log_xb} = \frac{\log a}{\log b}$
• common logarithms:log with base $``10"$example: $\log3 = \log_{10}3$
example: $\log x = \log_{10}x$

2.
Using a calculator, evaluate the following logarithms
by applying $``$ changeofbase rule$":$ 
3.
Using a calculator, solve for $x$ to the nearest hundredth.