Question 821539
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
ln(x+4)-lnx=3ln2 
ln (x+4)/x = ln 2^3 
     {{{(x+4)/x = 8}}}***
         x + 4 = 8x
             4 = 7x
             4/7 = x
CHECKING our answer***
  {{{(32/7)/(4/7) = 8}}}