Chuck, a single taxpayer, earns $75,000 in taxable income and $10,000 in interest from an investment in City of Heflin bonds. (Use the U.S tax rate schedule.) Required: a. How much federal tax will he owe? b. What is his average tax rate? c. What is his effective tax rate? d. What is his current marginal tax rate? Chuck, a single taxpayer, earns $75,000 in taxable income and $10,000 in interest from an investment in City of Heflin bonds. (Use the U.S tax rate schedule.) Required: a. How much federal tax will he owe? b. What is his average tax rate? c. What is his effective tax rate? d. What is his current marginal tax rate? Chuck, a single taxpayer, earns $75,000 in taxable income and $10,000 in interest from an investment in City of Heflin bonds. (Use the U.S tax rate schedule.) Required: a. How much federal tax will he owe? b. What is his average tax rate? c. What is his effective tax rate? d. What is his current marginal tax rate? Chuck, a single taxpayer, earns $75,000 in taxable income and $10,000 in interest from an investment in City of Heflin bonds. (Use the U.S tax rate schedule.) Required: a. How much federal tax will he owe? b. What is his average tax rate? c. What is his effective tax rate? d. What is his current marginal tax rate