I think it's the second one on the top, because the dotted one is actually inside the bigger one and you can get a clear representation of the sizes.
815 x 360 = 293,400 gal per second.
293,400 gal ÷ 4 quarts = 73,350 quarts per sec.
I'm fairly certain that's right - someone correct me if I'm mistaken.
Answer:
RP: x equals 0
JH: x equals -11
EG: x equals 9
hello
so this equation is written in point slope form: 
we can solve for y to get the equation into slope intercept form: y=mx+b
y+1=4/3x
subtract 1 from both sides
y=4/3x-1
slope: 4/3
y-intercept: -1
hope this helps
have a nice day :)