Problem 2: On 1/2/2018 a company bought a vehicle costing $150,000. The salvage value was expected to be $45,000 and the useful life was expected to be 10 years or 120,000 miles driven. The truck was driven 30,000 miles for 2018- 2019 combined. a) If the company uses units of activity depreciation, make the entry to record 2020 depreciation expense if the truck is driven 25,000 miles in 2020. Show your computations. b) On 1/2/2021 the company decided to change the estimated total miles it would drive this truck to 150,000 miles. Make the entry to record 2021 depreciation expense if the truck was driven 6,000 miles in 2021. Show your computations. c) On 1/2/2022 the company changes the estimated additional miles it would drive the truck to a total of 40,000 more miles from the date of this estimate change. Make the entry to record 2022 depreciation expense if the truck is driven 7,000 miles in 2022. Show your computations