Alyssa is a waitress at a restaurant. Each day she works, Alyssa will make a guaranteed wage of $20, however the additional amount that Alyssa earns from tips depends on the number of tables she waits on that day. From past experience, Alyssa noticed that she will get about $15 in tips for each table she waits on. How much would Alyssa expect to earn in a day on which she waits on 10 tables? How much would Alyssa expect to make in a day when waiting on t tables?