Patrick purchased a home on January 1, year 2018 for $600,000 by making a down payment of $100,000 and financing the remaining $500,000 with a 30-year loan, secured by the residence, at 6 percent. During 2018, Patrick made interest-only payments on the loan of $30,000. On July 1, 2018, when his home was worth $600,000 Patrick borrowed an additional $75,000 secured by the home at an interest rate of 8 percent. During 2018, he made interest-only payments on this loan in the amount of $3,000. What amount of the $33,000 interest expense Patrick paid during 2018 may he deduct as an itemized deduction if he used the $75,000 from the July 1 loan to purchase a car?