Case Study Questions

Hi! I need the answers please for questions 2 and 3 with all the parts and show me the steps for the calculations please and any equation you will speak about and here are the links below W=1099, x=19, y=1.099 Question 2 video https://youtu.be/QwRZkrI6ZIo Question 3(a) video https://m.youtube.com/watch?v=K40lNL3KsJ4 Question 3(b) video https://m.youtube.com/watch?v=rB83DpBJQsE Please cite all the sources you will use thank you!