air travel on Mountain Airlines for the past 18 weeks was: Week Passengers 1 404 2 410 3 420 4 415 5 412 6 419 7 424 8 433 9 438 10 440 11 446 12 451 13 455 14 460 15 466 16 474 17 476 18 244 Use an appropriate technique to develop a forecast for the expected number three weeks Can someone please show me how to work this problem?