This was the lab in which he gave us three problems and we had to solve them in MARS. The PDF has my solutions (which got a 100 so don't worry they're right).
The PDF is riddled with comments that explain every little thing that is happening. I hope it is clear enough that I won't need to explain anything here.
Please Note
It's important to note that MARS is not required for the exam. We will not be writing any assembly. In fact, he will instead give us assembly code to try and figure out.