Problems in bold require full solutions.  For the rest of the problems, do as many as you can in 30 minutes.

 

11.1:  # 1, 5, 10, 12, 14, [15]

 

11.2:  # 1, 3, 5, 6, 8, [10]

 

11.3:  # 2, 6, 7, [9], 10