Help find yellow shaded calculations and please show work.

\begin{tabular}{|lr|} \hline WACC Calculation \\ \hline Asset beta & \\ Risk-free rate & 0.5 \\ Market Risk Premium & 3.80% \\ Cost of debt & 4.00% \\ Target D/V & 7.00% \\ & 30% \\ Implied debt beta \\ Re-levered equity beta \\ Cost of equity \\ WACC \\ \hline \end{tabular}