[The following information applies to the questions displayed below.] Melissa recently paid $640 for round-trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $635 fee to register for the conference, $340 per night for three nights' lodging, $290 for meals in restaurants, and $510 for cab fare. Note: Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount. Leave no answers blank. Enter zero if applicable. Problem 9-49 Part-a (Algo) a. What amount of these costs can Melissa deduct as business expenses? Deductible amount