Forecast quarterly demand for year 5 using the following models: 1.4-week simple moving average 2. Simple exponential smoothing with a=0.1 3. Trend adjusted exponential smoothing (Holt's model) with a=0.1 and B=0.1 4. Linear regression with seasonality Year Quarter Demand 1 1 513 11 932 III 1.509 IV 1.902 2 1 693 II 1,163 1.857 IV 2,469 3 1 846 11 1,439 III 2.271 IV 3,079 1,070 11 1.751 III 2.785 IV 3,613