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y=0.00679x^3 – 0.0000802x^2 + 1.393x + 0.268, y=0.0000802x^3 – 0.00679x^2 + 0.268x + 1.393; x=1946
y=0.00679x^3 – 0.0000802x^2 + 1.393x + 0.268, y=0.0000802x^3 – 0.00679x^2 + 0.268x + 1.393; x=1946
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