Part I: Symbolize the following argument into propositional logic. Make sure you use the lexicon provided. Do not assume anything about the validity or invalidity of the arguments, just symbolize them. Always check your answers by translating back into English using the lexicon provided and then compare against the original English if they are not paraphrases, then your answer is wrong. 5. Unless Jay pays his VISA bill, his creditors will be knocking at the door. But Jay does not pay his VISA bill unless Margo earns a steady income through her computer deals. Margo does not earn a steady income through her computer deals. Thus, the creditors will be knocking at Jay's door. (P: Jay pays his VISA bill; J: Jay's creditors will be knocking at the door; M: Margo earns a steady income through her computer deals.) 6. John passed logic without studying. John studies just in case he must. Therefore, it is false that John must study logic if he is to pass logic. (P: John passed (is to pass) logic; S: John studies; M: John must (has to) study)