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An oil renery finds that it is necessary to treat the waste liquids from a new process before discharging them into a stream. The treatment will cost $20,000 the rst year, but process improvements will allow the costs to decline by $2,000 each year. As an alternative, an outside company will process the wastes for the xed price of $10,000lyear throughout the T year period, payable at the beginning of each year. Either way, there is no need to treat the wastes after? years. Use the annual worth method to determine how the wastes should be processed. The company's MARR is 14%. 5 Click the icon to View the interest and annuity table for discrete compounding when the MARR is 14% per year. The AW of the inhouse treatment is 35D. (Round to the nearest dollar.)