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A ravine's shape is given by y(x) = -11 x + 1.8 x² (m). You throw a rock from the origin, horizontally across the ravine and with initial speed 9.4 m/s². How far horizontally (in m) does the rock hit the ravine from your location? (Use g = 10 m/s².) (Please answer to the fourth decimal place - i.e 12.2332)

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