An asset for drilling was purchased and placed in service by a petroleum production company. its cost basis is $6, and it has an estimated mv of $12000 at the end of an estimated useful life of 15 years. if the expected annual net revenue from this asset is $8000, what is the after-tax cash flow for year 5 (end of year 5). the company’s paying income tax at the 15% rate and the 150% db method is used for depreciation. only fill in the number of your calculated result in the blank, e. g., if the result is $100, fill in "100"; also round to the nearest integer.