Question 315119
<pre>
 if log(base3)x=7, evaluate the following. log(base3)9x

   {{{log (3, (x)) = 7}}}
  {{{log(3, (9x)) = log (3, (9)) + log (3, (x))}}} ---- Applying {{{log (a, (bc)) = log (a, (b)) + log (a, (c))}}}
{{{highlight(log(3, (9x)))}}} = 2 + 7 = <font color = red><font size  = 4><b>9</font></font></b> ---- Substituting 2 for {{{log (3, (9))}}} and 7 (GIVEN) for {{{log (3, (x))}}}</pre>