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QUESTION
If the air temperature at ground level is 40 degreesF, the air temperature x miles high is given by T(x)=40-19x.
If the air temperature at ground level is 40 degreesF, the air temperature x miles high is given by T(x)=40-19x. Determine the altitudes at which the air temperature is from 21 degree F to 2 degrees F
