Math question: What is the product of the mixed number 3 1/2, the factor 5, and the real number 2.5?
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What is the derivative of the composition of functions f(g(x)) when f(x) = sin(x) and g(x) = x² + 3x - 2?
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What is the average age of the students in a class if the ages of 30 students are 12, 13, 14, 11, 12, 13, 15, 12, 11, 13, 14, 12, 13, 14, 11, 12, 13, 15, 12, 11, 13, 14, 12, 13, 14, 11, 12, 13, 15, and 12?