Because your demand has an upward trend, you want to use a forecast including a trend. In period 18, the level is estimated at F18 = 5,520, and the trend is estimated at T18 = 40. These give you FIT 18 = 5,560. Actual demand in period 18 is 5,600. a. (6 pts.) Calculate the new level (F) and trend (T) using alpha = 0.25, and delta = 0.3. b. (3 pts.) What is your forecast (FIT) for period 19? c. (3 pts.) What is the FIT for period 21? You can make an estimate without knowing actual demands in period 19 and 20.