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13. [16.66 Points] DETAILS MY NOTES Use technology to obtain approximate solutions graphically. All solutions should be accurate to one decimal place. (Zoom in for improved accuracy.) Find the intersection of the line through (0, O) and (8.5, 3) and the line through (7, 0) and (0,4). m > 14. [16.66 Points] DETAILS MY NOTES Find all solutions of the given system of equations and check your answer graphically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express your answer in terms of x, where y = y(x).) 4x3y=7 3x4y=7 w > 15. [16.66 Points] DETAILS MY NOTES 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.t Set up a system and then solve using technology. HINT [See the technology note accompanying Example 1.] United Airline . American JetBlue Southwest Continental Cost () 14.9 14.6 11.9 12.4 Suppose that, on a 3,000-mile New York to Los Ange es flight, United Continental, American, and Southwest flew a total of 180 empty seats, costing them a total of $77,145. If United Continental had three t'mes as many empty seats as American, how many empty seats did each of these three air ines carry on its ight? United Continental ':| empty seats American :] empty seats Southwest ':I empty seats