The formula for wind chill C (in degrees Fahrenheit) is given by C = 35.74 + 0.6215T − 35.75v0.16 + 0.4275Tv0.16 where v is the wind speed in miles per hour and T is the temperature in degrees Fahrenheit. The wind speed is 21 ± 3 miles per hour and the temperature is 8° ± 3°. Use dC to estimate the maximum possible propagated error (round your answer to four decimal places) and relative error in calculating the wind chill (round your answer to two decimal places).† dC = . ° dC/ C =