Develop a two-period weighted moving average forecast for periods 12 through 15 . Use weights of 0.7 and 0.3, with the most recent observation weighted higher. Calculate the forecasts for periods 1215 by using a two-period weighted moving average model (enter your responses rounded to the nearest whole number). \begin{tabular}{ccc} \hline Period & Demand & Forecast \\ \hline 10 & 201 & \\ 11 & 386 & \\ 12 & 397 & \end{tabular}