please answer 20, 21, and 22

The design specifications of a product are 100+11.5. The repair cost is $20. What is the loss at 98 ? Question 21 2pts Determine the degrees of freedom for given three two-level factors, three suspected two-factor interactions, and three-factor interaction. Question 22 2 pts A process is improved in terms of productivity. The data sets before and after are (61,63,58,57,60) and (54,56,52,56,51), respectively. What are the before larger-the-better S/N ratios