8.1B Workbook Solutions Recording

#17a, b – 00:08

#17c, d – 00:35

#17e – 01:37

#18a – 01:49

#18b – 03:10

#18c – 04:09

#18d – 04:59

#19a – 05:44

#19b – 06:56

#20a – 08:14

#20b – 09:45