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What is the sum of the first 13 odd numbers? 2x-3 3x plus 3? What are the other angles of a parallelogram when one interior angle is 27.5 degrees? You need to buy fertilizer for a flower bed with a diameter of 13 feet If one bag will fertilizer 10 square feet how may bags do you need to buy? What is the sum of the first 900 consecutive odd numbers?