4.4 #13
4.1 #37, 4.4 #77
4.2 #67
4.3 #25/Section breakdown/summary of rules
4.4 #89
4.4 #85
Alt method
Applications of exp/logs
4.4 #87
4.4 #13
4.4 #13
4.1 #37, 4.4 #77 
4.2 #67
4.3 #25/Section breakdown/summary of rules
4.4 #89
4.4 #85
Alt method
Applications of exp/logs
4.4 #87