The amount of money you have is $ 20864.521
Solution:
Given that you invested $15,000 dollars for 11 years at 3% annual interest compounded continuously.
To find: total amount of money
The compound interest formula for compounded continously is given as:

Where "p" is the principal
"r" is the rate of interest
"t" is the number of years
Here in this problem, p = 15000
t = 11 years

Substituting the values in formula we get,

Thus the amount of money you have is $ 20864.521