Which table represents a function?

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?