Question 171514
Here's the rule:


{{{log(b,x)=y}}} if and only if {{{b^y=x}}}


In your first problem, X takes the place of y in the rule, 3 takes the place of b in the rule, and 8 takes the place of x in the rule (I presume your first problem means the log base 3 of 8 as opposed to the log base 10 of 38)


The other problems follow the same pattern.