Melissa recently paid $800 for round-trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $510 fee to register for the conference, $400 per night for three nights' lodging, $220 for meals, and $445 for cab fare. (Leave no answers blank. Enter zero if applicable.) (Round your answer to the nearest dollar amount.) Problem 9-49 Part-a a. What amount of the travel costs can Melissa deduct as business expenses?