John and Mary Smith are married and file jointly. John and Mary do not have any children or other dependents. John's 2022 salary was $30,000. Mary's 2022 salary was $35,000. John made a $3,000 deductible IRA contribution for 2022. Mary made a $3,000 deductible IRA contribution for 2022. John and Mary's total itemized deductions for 2022 were $8,000. John has a $500 education credit for 2022. John had $2,800 in federal income taxes withheld from his paychecks in 2022. Mary had $3,200 in federal income taxes withheld from her paychecks in 2022. 1. What is John and Mary's Adjusted Gross Income? 2. What is John and Mary's Taxable Income? 3. What is John and Mary's Total Tax? 4. John and Mary may claim a ___________ refund for 2022