Chapter 7 Investigation Worksheet: Worked Solutions

Try the investigation worksheet first. Pause where prompted, then watch each answer explained. Length: 4 min 07 s. Captions are on: use the CC button.

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• 0:00 · Introduction
• 0:10 · How to solve each question
• 0:24 · Questions 1 and 2: try them
• 0:37 · Answers to Questions 1 and 2
• 0:51 · Questions 3 and 4: try them
• 1:04 · Answers to Questions 3 and 4
• 1:19 · Questions 5 and 6: try them
• 1:33 · Answer to Question 5
• 1:47 · Answer to Question 6
• 2:00 · Questions 7 and 8: try them
• 2:12 · Answers to Questions 7 and 8
• 2:26 · Section B, Questions 1 and 2: try them
• 2:39 · Answers to B1 and B2
• 2:54 · Section B, Questions 3 and 4: try them
• 3:07 · Answers to B3 and B4
• 3:24 · Section B, Questions 5 and 6: try them
• 3:38 · Answers to B5 and B6
• 3:54 · Well done!