Which situation CANNOT be represented by this equation? - 1/4x + 14 = 8

1) A hot-air balloon has a 14-foot diameter that each

of an hour gets steadily smaller

At what rate, 2, does the balloon have to shrink per hour before it has shrunk to a diameter of 8 feet?

2) A hot air balloon has a 14-foot diameter that is getting smaller at a rate of

foot per minute.

How many minutes, 2, will it take before the balloon has shrunk to a diameter of 8 feet?

3) A hot air balloon has an 8-foot diameter that is changing at a rate of

foot per minute.

How long in minutes, 27, will it take until the balloon has a diameter of 14 feet?