how many empty seats did each of these three airlines carry on its flight?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter5: Linear Inequalities
Section5.1: Solving Inequalities By Addition And Subtraction
Problem 57PFA
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The following table shows the amount spent by four U.S. airlines to fly one available seat 1 mile in the second quarter of 2014.† Set up a system and then solve using technology. HINT [See the technology note accompanying Example 1.]
Airline United
Continental
American JetBlue Southwest
Cost (¢) 14.9 14.6 11.9 12.4
Suppose that, on a 3,000-mile New York to Los Angeles flight, United Continental, American, and Southwest flew a total of 215 empty seats, costing them a total of $90,165. If United Continental had three times as many empty seats as American, how many empty seats did each of these three airlines carry on its flight?
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