As CFO of a major company, your treasurers office has reported a total market equity value of $$150$ million and total market debt value of $$300$ million. They also reported a percentage cost of equity and debt of $20\%$ and $3\%$ respectively. If your firm faces a $24\%$ marginal tax rate and is considered an investment project with an IRR of $7\mathrm{.}2\%$ what is your companies WACL and what decision should be made regarding the investment?