The air in a small room 12 ft by 8 ft by 8 ft is 3% carbon monoxide. Starting at t=0, fresh air containing no carbon monoxide is blown into the room at a rate of 100ft3min. If air flows out of the room through a vent at the same rate, when will the air in the room be 0.01% carbon monoxide? First find the function that describes how the volume of CO in the room x(t) varies with time

since both sides equal, there are infinitely many olutions.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.