A 7-year municipal bond with a face value of $1,000 earns annual income of $480. Your marginal tax rate (including state and federal taxes) is 36%. What annual pretax income on a 7-year corporate bond...

A 7-year municipal bond with a face value of $1,000 earns annual income of $480. Your marginal tax rate (including state and federal taxes) is 36%. What annual pretax income on a 7-year corporate bond of equal risk would provide you with the same annual after-tax income as the municipal bond?