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

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Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?