please help me for part c Adjusted forecast from May to September

After graduating from college, you and your friends start selling birdhouses made from recycled plastic. The idea has caught on, as shown by the following sales figures. Click the icon to view the sales data. a. Prepare forecasts for June through September by using a three-period moving average model (enter your responses rounded to the nearest whole number). b. Prepare forecasts for June through September by using an exponential smoothing model with =0.4. Assume that the forecast for May was 2,100 (enter your responses rounded to the nearest whole number). b. Prepare forecasts for June through September by using an exponential smoothing model with =0.4. Assume that the forecast for May was 2,100 (enter your responses rounded to the nearest whole number). c. Prepare forecasts for June through September by using an adjusted exponential smoothing model with =0.4 and =0.2. Assume that the unadjusted forecast Ft for May was 2,100 and the trend factor Tt for May was 900 (enter your responses rounded to the nearest whole number). More Info