RULES OF LOGARITHMS
Logarithms are not hard once you’re familiar and experienced with them and know all the rules. If
you’re a long way from fully understanding logs, don’t worry about them for this test. Logs will
probably account for no more than one question. It’s not worth spending a lot of time and effort
figuring out logs when they appear so infrequently on the test.
If you understand what a log means, then Example 10 is not very difficult. The log to the base 3 of
is the exponent that, attached to the base 3, will give you :
What you’re doing is solving an equation with the variable in an exponent. To do that, re-express
both sides of the equation in terms of the same base.
The answer is (A).