help answer these 3 questions using excel

what are u talking about, i already did it and i gave u all the info u should probably get som more practice

1. Determine the seasonal factors 2. Determine the regression function (okay to use excel data an alysis). 3. Use the above to forecast attendance for the four quarters of 2020 . \begin{tabular}{|c|ccccc|} \hline Qtr & 2015 & 2016 & 2017 & 2018 & 2019 \\ \hline 1 & 600 & 2400 & 2700 & 3200 & 3800 \\ 2 & 1550 & 3100 & 3500 & 4000 & 4500 \\ 3 & 1500 & 2600 & 2800 & 3600 & 4000 \\ 4 & 1500 & 2900 & 3700 & 4200 & 4900 \\ \hline \end{tabular}