During 2012 and 2013, supplies, inc. drove the truck 15,000 and 22,000 miles, respectively, to deliver merchandise to its customers. the company originally purchased the truck at the beginning of 2012 for $175,000. if the truck has an estimated life of 10 years and 300,000 miles, with an estimated residual value of $25,000, what amount of depreciation expense should supplies, inc. record in 2013 using the activity method?