Please don't give me copy paste answer. I want particularly part (d) answer.

3) You are employed as an Operations and Planning Manager at Tablon, a growing multinational engineering firm. The following data are their Operational costs year after year. Year 1 2 3 4 5 6 7 8 9 Value ($ Millions) 25 35 30 37 40 42 38 45 50 a)Plot the given data displaying the Trendline. b) Forecast for period 8 using 3-month moving average and exponential smoothing with a=0.4 c) Forecast for period 10,11, 12 using trend line projection and calculate the MAPE. d) Assume the base value at the end of period 2 was 40 million and the trend was-5. What would be the forecast for the period 8 (a=0.1, B=0.2)