3. The distance to Pluto is approximately 5,900,000,000 km. A firefly is about 0.04 cm. long. (a) What is the distance to Pluto written in scientific notation?
(b) What is the length of a firefly written in scientific notation?
(c) How many fireflies would it take to reach Pluto if they were put end to end? Write your answer in scientific notation and round to the nearest tenth (Hint: Check the units before you complete the operation)

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?