You can put this solution on YOUR website! Once you really understand what logarithms are, problems like this become much easier. In short, logarithms are exponents.
For example, represents the exponent for 10 (since the base of "log" is 10) which results in 57. So your problem, reworded, is:
Between what integers is the exponent for 10 that results in 57?
Since and and since 57 is between 10 and 100,