please include calculations, explanation and formula

Month Sales 1 60 2 55 3 70 4 80 5 85 6 75 7 85 8 90 9 120 10 125 (1) Use exponential smoothing with a=0.3 and F1 = 60 to forecast the monthly sales Fy for k = 2, 3, ...,11. (2) Use trend-adjusted exponential smoothing with a =0.3, B = 0.1, F, = 60 and T, = 7 to forecast the monthly sales Fy for k = 2, 3,...,11. (3) Compute MAPE for (1) and (2) to determine which model provides better forecasts