I appreciate your help, I really do.

Took the test. Think I did quite well. Luckily, because this is astronomy, the class doesn't focus heavily on physics. As such, the teacher emphasized the actual mathematical process itself and gave us the formulas and values for things like the speed of light. It was actually quite an easy test so long as you read the chapters. I now realize the worry that instigated this thread was unjustified. Although, I am glad I have this thread for future reference.