Cambridge Company purchased a truck on January 1, 2018. Cambridge paid $21,000 for the truck. The truck is expected to have a $2,000 residual value and a 5-year life. Cambridge has a December 31 fiscal year end. Using the double-declining balance method, how much is the 2019 depreciation expense? (Enter only whole dollar values.) Hint: what is the year 2 depreciation amount?