The graph shows the initial amount of water in a tank, , in gallons, after minutes. The initial amount of water in the tank was 50 gallons. If a new experiment starts with 15 gallons more water in the tank, which of the following graphs could represent the amount of water in the tank in the new experiment?
A graph with a y-intercept of 35.
A graph with a y-intercept of 50.
A graph with a y-intercept of 65.
A graph with a y-intercept of 80.
