Based on the picture I need help to answer this questions:

$1.$ What amount of these costs can Melissa deduct as business expenses?

$2.$ 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 $$1,740$ for transportation, $$820$ for lodging, and $$360$ for meals during this part of her trip, which she considers personal in nature. What amount of these costs can Melissa deduct as business expense?

$3.$ Suppose that Melissa made the trip to San Francisco primarily to visit the national parks and only attended the business conference as an incidental benefit of being present on the coast at that time. What amount of the airfare can Melissa deduct as a business expense?

$4.$ Suppose that San Francisco was Melissa's permanent residence and business location. She attended the conference in San Francisco and paid $$280$ for the registration fee. She drove $106$ miles over the course of three days and paid $$166$ for parking at the conference hotel. In addition, she spent $$310$ for breakfast and dinner over the three days of the conference. She bought breakfast on the way to the conference hotel, and she bought dinner on her way home each night from the conference. What amount of these costs can Melissa deduct as business expenses?