Exercise 7-15A Determine activity-based depreciation (LO7-4) 4 Tasty Subs acquired a delivery truck on October 1, 2021, for $21,000. The company estimates a residual value of $3,400 and a six-year service life. It expects to drive the truck 110,000 miles. Actual mileage was 4,900 miles in 2021 and 18,800 miles in 2022. 2.25 points Required: Calculate depreciation expense using the activity-based method for 2021 and 2022, assuming a December 31 year-end. (Do not round your intermediate calculations.) - 2021 2022 References Depreciation expense