need answer to #19 please

Use the following to answer questions 1819 AD Enterprises purchased equipment for $400,000 on January 1, year 1 . The equipment is expected to have a 4 year life, with a residual value of $50,000 at the end of its service life. 18. $100,000 Using the double-declining balance method, determine depreciation expense for year 2. 19. Using the straight-line method, determine book value at the end of year 2