Please answer all parts and show work to get a thumbs up, thanks!

owner wants to develop a forecast of piano sales for the coming year. The quarterly sales data follow. \begin{tabular}{|c|c|c|c|c|c|} \hline Year & Quarter 1 & Quarter 2 & Quarter 3 & Quarter 4 & \begin{tabular}{c} Total Yearly \\ Sales \end{tabular} \\ \hline 1 & 4 & 2 & 1 & 5 & 12 \\ \hline 2 & 7 & 4 & 4 & 14 & 29 \\ \hline 3 & 11 & 3 & 5 & 16 & 35 \\ \hline 4 & 13 & 9 & 7 & 22 & 51 \\ \hline 5 & 18 & 10 & 13 & 35 & 76 \\ \hline \end{tabular} aces.) denote the time series value in quarter 4 of year 5 . Round your numerical values to two decimal places.) Tt= b) Use the results of part (a) to develop a quarterly forecast for next year based on trend. (Round your answers to two decimal places.) forecast for quarter 1 forecast for quarter 2 forecast for quarter 3 forecast for quarter 4 (c) Use the adjusted seasonal indexes given in part (a) to adjust the forecasts developed in part (b) to account for the effect of season. (Round your answers to one decimal place.) forecast for quarter 1 forecast for quarter 2 forecast for quarter 3 forecast for quarter 4 owner wants to develop a forecast of piano sales for the coming year. The quarterly sales data follow. \begin{tabular}{|c|c|c|c|c|c|} \hline Year & Quarter 1 & Quarter 2 & Quarter 3 & Quarter 4 & \begin{tabular}{c} Total Yearly \\ Sales \end{tabular} \\ \hline 1 & 4 & 2 & 1 & 5 & 12 \\ \hline 2 & 7 & 4 & 4 & 14 & 29 \\ \hline 3 & 11 & 3 & 5 & 16 & 35 \\ \hline 4 & 13 & 9 & 7 & 22 & 51 \\ \hline 5 & 18 & 10 & 13 & 35 & 76 \\ \hline \end{tabular} aces.) denote the time series value in quarter 4 of year 5 . Round your numerical values to two decimal places.) Tt= b) Use the results of part (a) to develop a quarterly forecast for next year based on trend. (Round your answers to two decimal places.) forecast for quarter 1 forecast for quarter 2 forecast for quarter 3 forecast for quarter 4 (c) Use the adjusted seasonal indexes given in part (a) to adjust the forecasts developed in part (b) to account for the effect of season. (Round your answers to one decimal place.) forecast for quarter 1 forecast for quarter 2 forecast for quarter 3 forecast for quarter 4