What is the unit price of 12 gallons of gasoline that costs $39.48 ?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Can someone me do math because i am having a breakdown rn because i don’t get it

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.