Wind Chill The table gives the wind chill temperature when the outside temperature is 20°F.
Wind (mph) | Wind Chill (°F) | Wind (mph) | Wind Chill (°F) |
5 | 13 | 35 | 0 |
10 | 9 | 40 | −1 |
15 | 6 | 45 | −2 |
20 | 4 | 50 | −3 |
25 | 3 | 55 | −3 |
30 | 1 | 60 | −4 |
a. Use x as the wind speed and create a quadratic model for the data.
b. At what wind speed does the model estimate that the wind chill temperature will be −3°F?
c. Do you think the model found in part (a) is valid for x > 60? Explain.
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