1. Find the negation of: 4 5 > 9 O 4 3 5 or 5 3 9 O 4 3 5 and 53 9 O4>5 or 5>9 You answered: c 3. Determine which of the following does NOT express the given conditional proposition correctly. If David rides his bike to work this week, then his weekly gasoline bill is lower. 0 David riding his bike to work this week is a necessary condition for this weekly gasoline bill to be lower. 0 David riding his bike to work this week is a sufcient condition for this weekly gasoline bill to be lower. O David's weekly gasoline bill is lower if he rides his bike to work this week. 0 If David's weekly gasoline bill is not lower, then he did not ride his bike to work this week. You answered: b 7. Choose the answer that includes ALL the number sets which contains the number -213. OQ,R,C ON,W,Z.Q,R,C OZ,Q,R,C OW,Z,Q,R,C You answered: c 8. Let P be the statement: All students passed the Math 101 course. True or False, the following is the negation of P: "At least one student failed the Math 101 Course." 0 True 0 False You answered: b \f\f