Madelyn is a waitress at a restaurant. Each day she works, Madelyn will make a guaranteed wage of $20, however the additional amount that Madelyn earns from tips depends on the number of tables she waits on that day. From past experience, Madelyn noticed that she will get about $8 in tips for each table she waits on. How much would Madelyn expect to earn in a day on which she waits on 18 tables? How much would Madelyn expect to make in a day when waiting on tt tables?