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28 May, 17:22

The function C (w) = 0.013w^2-w-7 estimates the wind chill temperature C (w) at 0 degrees F for wind speeds w from 5 to 30 mile per hour. Estimate the wind chill temperature at 0 degrees F if the wind speed is 20 miles per hour.

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  1. 28 May, 17:25
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    C (w) = 0.013w^2 - w - 7

    w = 20mph = > c (20) = 0.013 (20) ^2 - 20 - 7 = - 21.8 °F
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