An investor lives in a state with a $5\mathrm{.}00\%$ tax rate. Her federal income tax bracket is $35\%.$ She wants to invest in one of two bonds that are similar in terms of risk $($and both bonds currently sell at par value$).$ The first bond is fully taxable and offers a yield of $9\%.$ The second bond is exempt from both state and federal taxes and offers a yield of $8\%.$ In which bond should she invest?