Okay, so I said you didn't have to implement the functions in the first problem. But now you do (at least for some of them). Put these function definitions into a script named lab3.py.

Warning: These are all pure functions. That means they take arguments, perform calculations, and return values, but they do not take input from the user and they don't print anything to the screen. So if you use print() or input() in the definitions of any of these functions, your problem will be rejected.

1. Implement the cube() function described above.
2. Implement the avg() function described above.
3. Implement the triplicate() function described above.
4. Implement the multiplicate() function described above