Business Finance Homework Help

I need help answering the following homework problems, 4-1, 4-2, 4-3, 4-4, 4-5, 4-6, 4-10, 4-12, 4-13, 4-14, 4-16, 4-17, 4-19, 4-20, 4-22, 4-23, 4-24, 4-27, 4-29 and the case study about North-South Airlines. I will provide the pictures of all of the problems below.