a. What amount of these costs can Melissa deduct as business expenses?

b. Suppose that while Melissa was on the coast, she also spent two days sightseeing the national parks in the area. To do the sightseeing, she paid $1,680 for transportation, $885 for lodging, and $455 for meals during this part of her trip, which she considers personal in nature. What amount of the total costs can Melissa deduct as business expenses?

Melissa recently paid $770 for round-trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $715 fee to register for the conference, $355 per night for three nights' lodging, $200 for meals in restaurants, and $310 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.)