Problem 6-39 (LO 6-5) David is a college professor who does some consulting work on the side. He uses 25% of his home exclusively for the consulting practice. He is single and 63 years old. His AGI (without consideration of consulting income) is $41,000. Other information follows: $ 4,125 1,600 Income from consulting business Consulting expenses other than home office Total costs relating to home: Interest and taxes Utilities Maintenance and repairs Depreciation (business part only) 6,575 1,550 475 1,625 Required: Calculate David's AGI. (Do not round intermediate calculations.) AGI