hi, i have modelled a simulation of radioactive decay and am using an exponential model of y = Ae^kx

and im asking to analyse my model and justify my choice of model.
and points I can discuss are relating the solution to the problem and explaining how the theory of the situation relates to your selected model.

here are my initial thoughts; i guess one unrealistic thing is that the model gives a number of atoms for when t > 10000 which is unrealistic?
dont think this comes under these categories though.

how would i do this?

thanks alot to anyone that answers!