The topic is to write an essay summarizing the topic simplifying the problem, then consider alternative ways of looking at it. Come up with a better solution for each problem for the following situation

The topic is to write an essay summarizing the topic  simplifying the problem, then consider alternative ways of looking at it. Come up with a better solution for each problem.for the following situation : 
-You are taking an exam next week, and you and your classmates are worried you might fail because you are not sure what will be in the exam. Your teacher is away on leave, and hasn’t left any revision notes or instructions.
The school’s solution is to remind you to revise carefully using your reading list