What greater than 476 and less than 598

Any numbers 477 to 597

I could pick 500 i mean its greater than 476 and less that 598.

Most likely I would pick 597 because its close.

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50