math. solve for t
posted by Kyle .
1/1024=42*0.5^(t/12.5)
Solve for t. Please show work. Much appreciated!

take log of each side.
log1024=log42+t/12.3 * log 1/2
solve for t. 
im getting 104 hours but the correct answer is 125 hours?

(log1024log42)12.5/log.5=192hrs