A simple Google search for "log properties" yields Logarithmic Properties -- LEARN ALL OF THESE!
These properties must be understood to solve this problem:
First, change to , which I explained earlier.
abender, I am just letting you know that I took the test and I nailed it! Never did I do a test better than this one. And you helped me a lot, those problems that you helped me solve and understand, were in the test and you are the reason that I knew how to do them and do them correctly. Thank you again! Happy holidays!