What is the equation of the parabola that opens downward, has a vertex at (2, -3), and passes through the point (1, -1)?
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Question: In triangle ABC, side AB measures 10 cm, side BC is twice as long as side AB, and angle C is 45 degrees. Find the lengths of sides AC and BC.
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What is the value of f(x) when x = 3 for the cubic function f(x) = x^3?