Question

Which expression could she input into her calculator to find this value

Answer 1

We can use the following property:

`\log _b(x)=\frac{\log _a(x)_{}}{\log _a(b)}`

So:

`\log _(12)(81)=(\ln(81))/(\ln(12))=(\log (81))/(\log (12))`

Answers:

`\begin{gathered} (\log (81))/(\log (12)) \\ \\ (\ln (81))/(\ln (12)) \end{gathered}`