Encontrar la ecuación de la recta

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?

F(x)=5/6x+3 which of the following is true

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is