he table gives the wind chill temperature when the outside temperature is 0°F Wind (mph) Chill (°F) (mph) Chill (°F) 25 21 Wind Wind Wind 35 40 14 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 will be 14°F? c. Is the model found in part (a) valid for x>63? Explain. 10 13 12 15 20 19 45 17 50 12 11 10 25 16 55 30 15 60

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.