Solve with linear algebra

19. Markov Chain: Suppose on any given class day you wake up and decide whether to come to class. If you went to class the time before, you're 70% likely to go today, and if you skipped the last class, you're 80% likely to go today. Some questions you might ask are: - If I go to class on Monday, how likely am I to go to class on Friday? - Assuming the class is infinitely long (the horror!), approximately what portion of class will I attend