The graph on the coordinate grid represents the altitude of a plane during a flight.
40,000
30,000
Altitude
(in feet)
20,000
10,000
0
30
120
60 90
Time
(in minutes)
At which approximate rate, in feet per minute, did the plane climb to the cruising altitude of 35.000 feet?
A. 30 ft/min
OD. 2,000 ft/min
o o
B. 117 ft/min
E. 2.333 ft/min
O C. 1.167 ft/min