Sally loaned Leah $10. Leah bought a book for Sally at a conference. Sally said she would pay her back for it. The book cost $24. Then, the two went out to dinner. They agreed to split the bill, which came
to $40. They found out after the meal that the restaurant didnt accept credit cards. Looking through
her wallet, Sally discovered that she only had $11. Leah barely had enough in her wallet, but they made
the $40. Who owes whom how much?

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?