While your Exploration should certainly be your focus over the break, you should also start looking at the following questions on applications of derivatives. Think of this as a “to do” list over the next couple of weeks (but do get a start now).
Exercise 19A questions 7, 8, 13, 17
Read page 525, and think about why the “Second Derivative Test” works, then complete
Exercise 19B questions 3, 7, 9, 12, 18
Exercise 19C questions 1, 2, 5, 8, 13