The rotation rate of a mixing blade, in rotations per second, slows as a liquid is being added to the mixer. The blade rotates at 1,000 rotations per second when the mixer is empty. The rate at which the blade slows is four rotations per second less than three times the square of the height of the liquid. If h is the height of liquid in the mixer, which of the following represents R(h), the rate of rotation?

Options

A. `4-9h^2`
B. `1,000-(4-3h)`
C. `1,000-(9h-4)`
D. `1,000-(3h^2-4)`

Answer

D