Math question: Graph the inequality 2x + 3y < 10 on a coordinate plane.
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What is the value of the exponential function f(x) = (10^x) / (e^x) when x = 2?
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Question: Find the vertex form of the quadratic function y = x² - 4x - 5. Graph the function, and determine the vertex, axis of symmetry, and y-intercept. Identify if the parabola opens upward or downward.