! Required information [The following information applies to the questions displayed below.] Melissa recently paid $715 for round-trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $440 fee to register for the conference, $310 per night for three nights' lodging, $270 for meals in restaurants, and $560 for cab fare. (Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount. Leave no answers blank. Enter zero if applicable.) a. What amount of these costs can Melissa deduct as business expenses? Deductible amount $ 2,780