SOLUTION: An airplane descends from 42,000 ft to 18,000 in 12 minutes. Express its rate of change in altitude in feet per minute as a signed number. (This chapter is discussing integers in

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Question 525978: An airplane descends from 42,000 ft to 18,000 in 12 minutes. Express its rate of change in altitude in feet per minute as a signed number. (This chapter is discussing integers in multiplication and division.)
Answer by jim_thompson5910(28476) About Me  (Show Source):
You can put this solution on YOUR website!
(18000-42000)/12


(-24000)/12


-2000


So the rate of change is -2000 ft/min


Basically, the plane is descending 2000 feet every minute.