Carl and Karina file a joint return. Karina earned a salary of $40,500 and received dividends of $3,200, taxable interest income of $2,100, and nontaxable interest of $1,050. Carl received $9,400 of social security benefits and a gift of $6,100 from his brother. What amount of social security benefits is taxable to Carl and Karina?

Required: Carl and Karina file a joint return. Karina earned a salary of $40,500 and received dividends of $3,200, taxable interest income of $2,100, and nontaxable interest of $1,050. Carl received $9,400 of social security benefits and a gift of $6,100 from his brother. What amount of social security benefits is taxable to Carl and Karina? Answer is complete but not entirely correct