8 The temperature adjusted for wind chill is a temperature that tells you how cold it feels, as a resultof the combination of wind speed, w, in miles per hour, and actual temperature, T, as measured bya thermometer in degrees Fahrenheit. The table below shows the temperature adjusted for windchill, f(w,T), as a function of w and T. The left column of the table gives the wind speed in milesper hour, the top row gives the actual temperature in degrees Fahrenheit, and the remainingentries give thespeed and actual temperature.temperature adjusted for wind chill in degrees Fahrenheit as a function of windw\T 35 30 25 20 151031 25 19 13 7-5-111027 21 15 93-4-10 -161525 19 13 6-7-13 -192024 17 114-2-9-15 -222523 16 93-4-11 -17 -24Table of windchills.* F2* ES4)F3F6F7F8F9F10F11F12$%&*3456789.dele{ERYUFGJK>CValtndcommandoption+ ||.. ..- ue Sunday(a) Estimate f„ (20, 30) and give a practical interpretation. f, (20, 30) ×If the wind is blowingA mph and the actual temperature is4 degrees Fahrenheit, it will feeldegreesFahrenheit colder for each 1 mph increase in wind speed.(b) Estimate fr (15, 10) and give a practical interpretation. fr (15, 10)If the wind is blowingA mph and the actual temperature is* degrees Fahrenheit, it will feeldegreesFahrenheit warmer for each 1 degree Fahrenheit increase in actual temperature.►►F12吕0F8F9F10F11F3F4F5F6F7#$%&*345678{EY%3DDFGH.KValtcommandoption* COB

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(a) Estimate fw (20, 30) and give a practical interpretation. fy (20, 30) × If the wind is blowing 2 mph and the actual temperature is degrees Fahrenheit, it will feel degrees Fahrenheit colder for each 1 mph increase in wind speed. (b) Estimate fr (15, 10) and give a practical interpretation. fr (15, 10) - If the wind is blowing A mph and the actual temperature is * degrees Fahrenheit, it will feel degrees Fahrenheit warmer for each 1 degree Fahrenheit increase in actual temperature.