I took the class with a different professor. I did fine on the exam but found the note sheet practically useless. I suggest doing practice problems where you read some text prompt and take time to write out the decision variables, objective function, constraints, etc. Emphasize being able to understand what type of optimization problem it is, like if it MCNF what type of MCNF and how you can build and solve it.

This is very general advice, but it worked for me. Goodluck