Math question: Graph the inequality system 3x + 4y β€ 12 and 2x - 5y > 10. Identify the solution region.
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What is the average temperature, in degrees Fahrenheit, of a city over the course of 30 days if the daily temperatures were 70, 65, 75, 80, and 85 degrees Fahrenheit?
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What is the derivative of sinh(x) cosh(x) - tanh(x) at x = 0?