Test 4 - Chapters 6,7,8

Hello guys, hope you are enjoying your holidays... if instead you are a little bit anxious and already started studying here is Test 4 on chapters 6-8!

https://docs.google.com/document/d/16hcZdwpTq4J7sEhQIfUhKJ7eFf9ro0K-XrPziBU6qHo/edit

Feel free to comment if you have any uncertainties.