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MAT 117 Piecewise Functions 1.4 Name___________________ 1. The table below shows the 2009 income brackets and tax rates for a single person. Draw a graph of a piecewise function with the tax rates on the vertical scale and the income on the horizontal scale. 10% 15% 25% 28% 33% 35% $33,951 – $82,251 – $171,551 – $372,951+ $0 –$8330 $8351 – $33, 950 $82,250 $171,550 $372,950 2. The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same hear loss as the given temperature and wind speed. One formula for computing the equivalent temperature is t 10.45 10 v 4 33 t W 33 22.04 33 1.595833 t 0 v 1.79 1.79 v 20 v 20 where v represents the wind speed (in meters per second) and t represents the air temperature Compute the wind chill for the following. a) An air temperature of 10°C and a wind speed of 1 meter per second. b) An air temperature of 10°C and a wind speed of 5 meters per second. c) An air temperature of 10°C and a wind speed of 25 meters per second. C .