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17 July, 15:50

Use the quadratic function to predict f (x) if x equals 8. f (x) = 25x2 - 28x + 585 f (8) = 2679 f (8) = 1614 f (8) = 1961 f (8) = 2201

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  1. 17 July, 19:25
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    To predict f (x) when x equals 8 we simply substitute.

    So f (x) = 25x2 28x + 585

    f (8) = 25 (8) ^2 - 28 (8) + 585

    f (8) = 25 * 64 - 224 + 585

    f (8) = 1600 - 224 + 585 = 1961

    Hencse f (8) = 1961
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