Donny and Marie, former tag-team mud wrestlers, earned the following interest from their investments during the current year: Utah School District bonds = $1,500 United States Series HH savings bonds = $750 Colonial Fund Corporation 20-year bonds = $825 Hershey Corporation 15-year bonds = $500 Virginia Beach Sanitation Fund bonds = $1,100 How much interest income must Donny and Marie include on their joint tax return in the current year?