3. A firm has been using the following equation to predict annual demand for helix gears: Yt= 55+ 4t, where t is in years. Thus, the prediction for year 2 is 55 +4*2 = 63 Demand for the past few years is shown below. Year 2 3 4 5 6 7 Demand 60 65 69 76 85 85 Is the forecasting performing as well as it might? Support your answer quantitatively!