3) An airliner has altitude h. Also, let t be time. If the rate of change of the airliner's altitude with
Ah
ft
respect to time is
-=-1500- how long
At
min
does it take the airliner to descend from
h = 32,000 ft to ground level (h = 0)?
A) 17.79 min
B) 18.60 min
C) 19.51 min
D) 20.42 min
E) 21.33 min