you haven't posted your enitre question, what are x and y defined as, I presume we have something along the lines of and
I'll help you with the first one to get you started. As these question are very routine.
using the multiplication law of logs.
then use the power law
the replace he logs with x and y (assuming I guessed their definitions correctly)
Now you need to use the power law and division law again for the next question.
edit: everything you need is given in that PDF earboth attached in this thread http://www.mathhelpforum.com/math-he...829-post5.html