please help #3 and #4! Thank you

A tax-exempt municipal bond with a coupon rate of 9.00% has a market price of 99.39% of par. The bond matures in 8.00 years and pays semi-annually. Assume an investor has a 29.00% marginal tax rate. The investor would prefer otherwise identical taxable bond it's yield to maturity was more than $ answered not submitted Attempts Romaining: Infinity Answer format: Percentage Pound to: 2 decimal places (Example: 9.24%, % sign required WW accept decimal format rounded to 4 decimal places (ex: 0.09247) A taxable bond with a coupon rate of 8.00% has a market price of 99 03% of par. The bond matures in 18.00 years ans pays semiannually. Assume an investor has a 27.00% marginal tax rate. The investor would prefor otherwise identical tax-exempt bond 's yield to maturity was more than % pomi Attempts Remaining: Infinity Answer format percentage Hound to: 2 decimal places (Example: 9.24%, sign required. We accept decena forma Founded to 4 decimal places 0.0924