ces: Required information [The following information applies to the questions displayed below.) This year Randy paid $31,750 of interest on his residence. (Randy borrowed $500,000 to buy his residence, which is currently worth $550,000.) Randy also paid $3,750 of interest on his car loan and $6,075 of margin interest to his stockbroker (investment interest expense). How much of this interest expense can Randy deduct as an itemized deduction under the following circumstances? b. Randy had no investment income this year, and his AGI is $75,000. Interest deductible