PS 4, 6, 7, 8, 9

PS 04 - Question
https://goo.gl/forms/veufFbZtCuyPsptt2

PS 04 - Answer
https://docs.google.com/spreadsheets/d/1-WoFvLunWvHlDQwG2V4GTbP1x9ou3ObmS9FNWXib8pE/edit?usp=sharing

-----------------------------

PS 06 - Question
https://goo.gl/forms/AAQMoIUBe6He5gZ13

PS 06 - Answer
https://docs.google.com/spreadsheets/d/1cCoLjD2XdE2MsNpZByTNWYr9W2ESvlhOKvNTrCH6S28/edit?usp=sharing

-----------------------------

PS 07 - Question
https://goo.gl/forms/uOuYIgTy6ibQC7ZL2

PS 07 - Answer
https://docs.google.com/spreadsheets/d/1YIChmyADcovvNK1nQwBVC9BZi-FQhHWonq_4oTGd5Os/edit?usp=sharing

-----------------------------

PS 08 - Question
https://goo.gl/forms/Xl8ds3ECuX7YH1x92

PS 08 - Answer
https://docs.google.com/spreadsheets/d/1tXDgSc189ag5a-KYGa3qijUeQtVjZPxi6QodKF4ad9g/edit?usp=sharing

-----------------------------

PS 09 - Question
https://goo.gl/forms/OjHDlX0fIwTwBW4g1