Airplane A takes off and ascends at a rate of 3000 ft/min. At the same time, Airplane B, which is flying at 30,000 ft, begins to descend at a rate of 2500 ft/min.

Let h represent the height off the ground in feet, and let t represent time in minutes.

Which system models this situation?

A.
h = 3000t
h = 2500 + 30,000t

B.
h = 30,000 + 3000t
h = 30,000 - 3000t

C.
h = 2500t
h = 30,000 - 3000t

D.
h = 3000t
h = 30,000 2500t

Question

Airplane A takes off and ascends at a rate of 3000 ft/min. At the same time, Airplane B, which is flying at 30,000 ft, begins to descend at a rate of 2500 ft/min.
 
Let h represent the height off the ground in feet, and let t represent time in minutes.
 
Which system models this situation?
 
 A.
h = 3000t
h = 2500 + 30,000t
 
 B.
h = 30,000 + 3000t
h = 30,000 - 3000t
 
 C.
h = 2500t
h = 30,000 - 3000t
 
 D.
h = 3000t
h = 30,000  2500t

fibonaccichick666 · Answer

So, let's think about the first plane

fibonaccichick666 · Answer

If we measure time in minutes as t, at t=0 what is the location of the plane, where does it start?