Just want to make sure the answer i circled was correct or if i'm doing something wrong.

Select the sequences that are geometric.

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

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?