Finance quiz questions

please answer the following 7 questions in it's entirety. 

 #11.C

#12. A,B,C

#13

#14. A-M

#16

#18

#19

Textbook

Brealey, R., Myers, S. C., Marcus, A. J. (2020). Fundamentals of corporate finance(10th ed). McGraw-Hill Education: New York, NY.