LO.3 Bill, who is single with no dependents, had AGI of $100,000 in 2012. His AGI included net investment income of $15,000 and gambling income of $1,100. Bill incurred the following itemized deductions for income tax purposes:

Medical expenses (before 7.5%-of-AGI floor) $11,000 State income taxes 3,200 Personal property tax 2,000 Real estate tax 8,400 Interest on personal residence 12,200 Interest on home (never rented to others) 3,800 Interest on home equity loan (proceeds were used to buy a new automobile) 2,700 Investment interest expense 3,300 Charitable contribution 5,000 Casualty loss (after $100 floor, before 10%-of-AGI floor) 13,000 Unreimbursed employee expenses (before 2%-of-AGI floor) 2,400 Gambling losses 900 What is the amount of Bill’s AMT adjustment for itemized deductions? Is it positive or negative?