Murphy Company purchased a delivery truck for $50,000 on January 1, 2018. The truck has an expected residual value of $4,000, and is expected to be driven 100,000 miles over its estimated useful life of 8 years. Actual miles driven were 15,000 in 2018 and 12,000 in 2019. Instructions: Compute depreciation expense for: (a) 2018 using the straight-line method (b) Prepare the journal entry for (a) (c) 2018 using the units-of-activity method (d) 2018 using the double-declining balance method. (e) 2019 using the double-declining balance method. Enter your answers in the text box below.