What is the value of f(3) for the linear function f(x) = x?
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Question: In triangle ABC, the angle bisector of angle A intersects side BC at point D. If AB = 8 cm, AC = 6 cm, and BD = 4 cm, what is the length of CD?
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What is the standard deviation of a data set comprised of 10 values: 4, 6, 8, 9, 12, 14, 16, 18, 20, 22?