Air travel Mountain Airlines for the past 18 weeks was: Week Passengers 1 405 2 410 3 420 4 415 5 412 6 420 7 424 8 433 9 438 10 440 11 446 12 451 13 455 14 464 15 466 16 474 17 476 18 482 a. Explain why an averaging technique would not be appropriate for forecasting. b. Use an appropriate technique to develop a forecast for the expected number of passengers for the next three weeks. (Teacher said Linear Trend Model) The teacher wants us to use the linear trend model.