1. Which of the following represents an exponential function? (1) y = 3x - 7 (3) y=3(7) (2) y = 7x? (4) y = 3x2 +7

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

50 points~ ! i have to turn this in tomarrow

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?