Question 73568
we know that the bank returned to us $15,000 with the bank compounding continuously. Using natural logarithms, find how long we have left the money in the bank (find t). Round your answer to the hundredth's place.
-----------
If it was compounded continuously the formla you want is:
A= Pe^rt
Then 
15000=Pe^rt
COMMENT: You did not post P, the initial investment, or r, the annual 
rate of interest.  Without them you cannot get a number figure for "t".
You can get a symbolic answer.
e^rt = 15000/P
Take the natural log to get:
rt = ln(15000/P)
Then:
t= (1/r)ln(15000/P)
=============
Cheers
Stan H.