urgent!!!! plz

Iverson Company purchased a delivery truck for $45,000 on July 1,2016. The truck was assigned an estimated useful life of 4 years and has a residual value of $10,000. Required: Compute depreciation expense using the double-declining-balance method for the year 2017. ( Note: write your answer as a number only, with no commas or dollar signs. If your answer is $1,500, write it as 1500 )