Question: Find the derivative of f(x) = 3x^2 - 5x + 7.
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What is the square root of 169 multiplied by the cube root of 64?
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What is the average number of books read by a group of 20 students, given that each student read 5, 8, 6, 10, 7, 9, 5, 4, 8, 7, 6, 9, 7, 6, 5, 7, 6, 8, 9, and 4 books, respectively?