Part I: Proving that an argument is valid using rules of inference (30 pt.) 1. (30 pt., 10 pt. each) Write each of the following arguments in argument form. Then, use the rules of inference to show that each argument is valid. a. Let S(x) be 'x is a student in this class," P(x) be "x has access to Gradescope," and Q(x) bex submitted the homework assignment, where the domain consists of all people. Every student in this class has access to Gradescope. Everyone who has access to Gradescope submitted the homework assignment. Bob is a student in this class. Therefore, Bob submitted the homework assignment. b. Let S(x) be x did not attend class, P(x) be "x submitted the homework assignment," and Q(x) be "x passed the exam," where the domain consists of all students in this class. Every student in this class who did not attend class or did not submit the homework assignment did not pass the exam. Ana, a student in this class, passed the exam. Therefore, Ana attended class