Cash Flow Inc. stock has a$$ of $\mathrm{.}85.$ and a credit rating of BBB$.$ Currently, BBB rated firms have average credit spreads of $2\mathrm{.}75\%$ above a comparable Treasury rate. Assume Cash Flow Inc's debt faces the same yield as an average BBB rated firm. If the risk premium for the market $($or rm $-$ rF$)$ is $4\mathrm{.}5\%,$ the appropriate Treasury rate $($or risk$-$free rate$)$ is $3\mathrm{.}80\%,$ and uses $60\%$ debt financing, estimate the firm's cost of debt, cost of equity, and weighted average cost of capital.