A rubber ball is dropped from the top of a hole. Exactly 3.5 seconds later, the sound of the rubber ball hitting the bottom is heard. How deep is the hole?

The hole is approximately ____________ feet deep

(round to the nearest tenth)

Hint : the distance that a dropped object falls (t) in seconds is represented by the formula s=16t^2. The speed of sound is 1100 ft/sec.

Please show all work in detailed form