please answer all grey boxes

A company is contemplating either issuing debt or equity by the same amount of $1.2 billion: (all shares and amounts in millions \begin{tabular}{l|c|} \hline Debt & $1,200.0 \\ \hline Equity & $1,200.0 \\ \hline Current shares outstanding & 400.0 \\ \hline Additional shares of equity & 100.0 \\ \hline \end{tabular} \begin{tabular}{l|r|} Expected EBIT \\ Tax rate & $2,500.0 \\ \hline \end{tabular}