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 American Southwest Cost (4) United Continental 14.9 American 14.6 JetBlue X empty seats X empty seats X empty seats 11.9 Southwest Suppose that, on a 3,000-mile New York to Los Angeles flight, United Continental, American, and Southwest flew total of 185 empty seats, costing them a total of $79,005. 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? United Continental 110 23 52 12.4

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