HELP PLEASE

Sales of tablet computers at Ted Glickman's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below: Week 1 2 3 Demand 20 20 29 Week 1 2 Demand 20 20 Forecast 20.0 20 4 38 3 29, 5 6 26 28 a) The forecast for weeks 2 through 10 using exponential smoothing with a = 0.55 and a week 1 initial forecast of 20.0 are (round your responses to two decimal places): 4 38 5 26 7 8 9 37 20 26 6 28 7 8 37 20 10 30 9 26 10 30 seling