Question 172950
(A) 
{{{log(b,18) = log(b,2*3*3)}}}
{{{log(b,2*3*3) = log(b,2) + log(b,3) + log(b,3)}}}
{{{log(b,18) = .3562 + 2*.5646}}}
{{{log(b,18) = 1.4854}}}
(B)
{{{log(b,6b) = log(b,6) + log(b,b)}}}
{{{log(b,6b) = log(b,2) + log(b,3) + log(b,b)}}}
{{{log(b,6b) = .3562 + .5646 + 1}}}
{{{log(b,6b) = 1.9208}}}
(C)
{{{log(b,5/2) = log(b,5) - log(b,2)}}}
{{{log(b,5/2) = .8271 - .3562}}}
{{{log(b,5/2) = .4709}}}