Three friends are working at the comic book store. they start the day with $300 in the cash register. through the day, they make a few sales, but they also take out $160 to pay some expenses. at the end of the day, they have $342.45 in the register. what were there total sales for the day?

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?