What is the average age of the students in a class if their ages are 18, 17, 16, 19, and 20?
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Math question: Consider the graph of a quadratic function. If the vertex of the parabola is at (2, -5), what is the equation describing this graph?
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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?