I know horribel picture, but you can ser that the tank holding 944 gallons is f(x) and the tank holding 1180 is g(x) tjen they have a variable wich is -5x and -9x as the rate the water is leaking. And you can see in A that the x coordinate is 59 wich means it takes 59 weeks befare they are the same. And the y coordinate is 649 wich means that there are then 649 gallons in both after those 59 weeks. (Sorry for bad english)