The following is the recent historical sales of Sony HDTV at a local BestBuy store. Month Jan Feb Mar April May Actual HDTV sales 86 70 74 87 104 Using weighted moving average method, with weights of 0.5 one period ago, 0.3 two periods ago, and 0.2 three periods ago, to forecast sales for June. Input should be an exact number. 1 pts