Enter the cycle number, n, in the x column and the number of radioactive atoms in the y column. When you finish, resize the window.

Answer:
I am not too sure about the X or Y, but they didn't seem necessary in my quiz. However, after that, you'll want to click "Exponential"
Explanation:
I just took the test, that's about it!
Answer:
at first click done,
A: exponential
then, i just put 0.5, and somewhat close.
Explanation:
edge 2021!!!