Math Question: Find the equation of a circle centered at (-3, 2) with a radius of 5.
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What is the average weight (in pounds) of a sample of 20 students, given their weights: 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, and 230?
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What is the domain (in radians) of the function f(x) = cos(x)?