a. On January 1, 2021, Bruno's Electrical Contractors bought a vehicle at a cost of $48,000. The vehicle is estimated to have a useful life of 5 years. The controller estimates the vehicle will be used for a total of 150,000 miles during its lifetime. The salvage value of the vehicle is estimated to be $6,000 at the end of 5 years. During 2021 , the company drove the vehicle 37,500 miles and in 2022 , the company drove it 48,300 miles. (i.) Required: Calculate the amount of depreciation expense for 2021 and 2022 under each of the following methods: 1. Straight-Line Method 2. Units of Production Method 3. Double Declining Balance Method