Just a couple more im confused about

I have one question that asks me to 'apply the laws of logarithms' to change the form of the following equation

Once again the samples are way easier and dont prepare me I need to change the form so that I can describe the transformations

the result I got was

3log_3(x-4)-1

It feels as if I'm doing it wrong though could you please show me how to get the final form so I can do the transformations?