The answer is b because I took it and got it w
It would be D. because the volume of a sphere is 4/2 x pi x radius^3.
Since we have two points (2,54) and (4,54), we can assume a linear function and solve for the slope and intercept. So if V=kt+b where t is time passed and v is velocity of the car, we can plug in and solve for k and t, that would give t as a function of v, and you can graph it