Final answer:
Melissa can deduct a total of $2,325 as business expenses. This includes the costs for airfare, conference registration, lodging, meals, and cab fare related to the business conference. Expenses from the additional sightseeing days are not deductible as they are personal.
Step-by-step explanation:
To determine the amount of costs Melissa can deduct as a business expense, we need to consider only the expenses related to the business portion of her trip. The initial costs for the airfare, conference fee, lodging, meals, and cab fare are all considered business expenses because they are directly related to attending the business conference. However, the additional expenses for sightseeing, including transportation, lodging, and meals, cannot be considered business expenses because they were incurred during a personal activity.
Therefore, Melissa's deductible business expenses are as follows:
- Airfare: $435
- Conference fee: $680
- Lodging for the conference (3 nights at $270 each): $810
- Meals for the conference: $175
- Cab fare: $225
The total amount of deductible business expenses is the sum of these amounts, which equals $2,325.