Math Question: Calculate the derivative of f(x) = 3x^2 - 4x + 5 using the power rule.
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Math question: What is the maximum value of the quadratic function f(x) = 3x^2 - 4x + 5 in the interval [-1, 2]?
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What is the median of a set of 9 numbers, where the first 4 numbers are 10, 15, 20, and 25, and the remaining numbers form an arithmetic sequence with a common difference of 4?