Yis equal to 12 times the difference between a number and 4. which of the following equations models this situation?

n - a number

"×" times

"-" difference

y = 12 × (n - 4) → y = 12(n - 4)

9514 1404 393

  0.195 ft/min

Step-by-step explanation:

The rate of change of height is equal to the rate of change of volume, divided by the base area.

  base area = (π/4)d² = (π/4)(14 ft)² = 49π ft² ≈ 153.94 ft²

Then the rate of change of height is ...

  (30 ft³/min)/(153.94 ft²) ≈ 0.19488 ft/min ≈ 0.195 ft/min

That's about 2.34 inches per minute.