1. **State the problem:** Calculate the total cost for attending a conference including registration and daily expenses for 4 days. 2. **List given data:** - Registration cost = 400 - Hotel cost per day = 200 - Rental car cost per day = 80 - Per diem cost per day = 50 - Parking cost per day = 30 - Coverage cost (one-time) = 200 - Number of days = 4 3. **Formula:** Total cost = Registration + (Sum of daily expenses \times Number of days) + Coverage 4. **Calculate sum of daily expenses:** $$200 + 80 + 50 + 30 = 360$$ 5. **Calculate total daily expenses for 4 days:** $$360 \times 4 = 1440$$ 6. **Calculate total cost:** $$400 + 1440 + 200 = 2040$$ 7. **Final answer:** The total cost for attending the conference is **2040**.