Which one of the following sets is not a function? *

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?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Can anyone me get through my algebra 2 class? the only class i need to graduate..