Please provide Excel formulas and how to solve them. Please make it large enough so I can see the formulas

A) Expected Returns E) Portfolio EF \begin{tabular}{|r|l|l|l|l|l} WE & WF & CovEF & CorrEF & E[REF] & EF \\ \hline 51% & 49% & & & & \\ \hline \end{tabular} A) Expected Returns E) Portfolio EF \begin{tabular}{|r|l|l|l|l|l} WE & WF & CovEF & CorrEF & E[REF] & EF \\ \hline 51% & 49% & & & & \\ \hline \end{tabular}