1. The rate of depreciation of a machine is inversely proportional to the square of t + 2, where V is the value of the machine t years after it was purchased. The initial value of the machine was $500,000, and its value decreased $100,000 in the first year. Estimate its value after 6 years. Round your answer to the nearest integer. (A) $500,000 (B) $275,000 (C) $550,000 (D) $475,000 (E) $350,000