Question 251114
Email me at justin.sheppard.tech@hotmail.com
I will provide you with a link to an online whiteboard where I will help you with your logarithm problems. I will edit my answer while I am waiting for your response to try and include a summary of how to do this, but the whiteboard is definitely the best way to go.

Respectfully,
Justin

EDIT: 5 log base 25 (4x) = 8
log base 25 (4x) = 8/5  
{{{(log 4x)/(log 25)}}}=8/5  <---Change of base formula
log 4x=(8/5)log 25
.
{{{10^((8/5)log 25)=4x}}}
.
{{{(10^((8/5)log 25))/4=x}}}
Calculator approximation is x=43.1166