Unit 4 Lesson 7 & 8
https://docs.google.com/document/d/1QO6UAwCQ7gZQ7i4xGeXXiAZ0x9YhXkL2bP9TOVzdjVM/edit?usp=sharing
https://drive.google.com/file/d/0B7-2kQ-HqqN7Rk5JbERlREtYa3pXaXdEYzRVNW9kSHNVVmVF/view?usp=sharing