Mr. and Mrs. Bachman, both age 65, file a joint return. In 2020, they have wages of $30,000, dividends of $6,200, and municipal bond interest of $3,000, and they received $10,300 for the sale of stock that cost $4,000 in 1992. They made a $3,000 contribution to their Roth IRA, paid $4,100 in deductible mortgage interest and real estate taxes, and made a $2,500 charitable contribution. What is their gross income, adjusted gross income, and taxable income??