1. A phone card dealer has been monitoring sales of one of its outlets of internet pre-paid cards. Daily sales during the last 15 days were: 8 49 2 38 10 48 5 48 13 54 6 49 14 56 Day Cards Sold 3 42 36 9 52 50 15 57 12 Day Cards Sold 52 Assuming that the data refer to demand rather than sales and using a trend-adjusted smoothing technique with an initial forecast of 50 for Day 8, an initial trend estimate of 2, and - -0.3 develop forecasts for days 9 through 16