A hot air balloon is 135 feet in the air. It is descending at a rate of 6 feet per minute. What does the expression below represent?
135 ‒ 6x
A.
The rate at which the balloon is descending.
B.
The height of the balloon after a certain number of minutes.
C.
The initial height of the balloon.
D.
The number of minutes it will take for the balloon to reach the ground.