pls help

Develop a two-period weighted moving average forecast for periods 12 theough 15 Use weights of 0.9 and 0.1, wht the mest recent coservation weighted higher. \begin{tabular}{cc} \hline Period & Demand \\ \hline 10 & 274 \\ 11 & 366 \\ 12 & 405 \\ 13 & 305 \\ 14 & 421 \\ \hline \end{tabular} Calculate the forecasts for periods 1215 by using a two-peniod weighted moving average model (enter your responses roundod fo the neareit whole number) \begin{tabular}{ccc} \hline Peried & Demand & Ferecast \\ \hline 10 & 274 & \\ 11 & 300 & \\ 12 & 405 & \end{tabular}