Airplane maintenance: High Low Required: 44,000 15,968,000 28,000 11,976,000 Use the high-low method to answer the following questions. If an answer is zero, enter "0". If require 1. What is the variable rate for airplane depreciation? 0 per flight hour What is the fixed cost for airplane depreciation? 18,900,000 2. What is the cost formula for airplane depreciation? Total cost of airplane depreciation = $ 18,900,000 3. What is the variable rate for fuel? 10,134 per flight hour What is the fixed cost for fuel? 0 4. What is the cost formula for fuel? Total cost of fuel = $ 10,134 x Number of airplane flight hours 5. What is the variable rate for airplane maintenance? X per flight hour What is the fixed cost for airplane maintenance? X 6. What is the cost formula for airplane maintenance? Total cost of airplane maintenance = $ + ($ X Xx Number of airplane flight hours