Do think of what you learned or reinforced rather than what the sample says. Depending on the classes you took before etc. your experience will be different. Minimum 2 page single spaced not bigger than 10 font but most people seem to write a lot more.
you write from learning bus 173 B class experience ,how you felt about this class : (hard , a lot of work and time to spent), and recommendation for the class. it have example down on file .