Question

How would you solve log base 4 of 12 with a calculator?

Answer 1

unfortunately both answers above are incorrect. should be the log of the input divided by the log of the base

Answer 2

\[\log_b(x)=\frac{\log(x)}{\log(b)}\] so in your case it should be
\[\log_4(12)=\frac{\log(12)}{\log(4)}\]