need answer

Question

if the temperature on the ground is 41 degrees fahrenheit then the air temperature x miles high is given by T=41-29x. Determine the altitudes at which the air temperature is less than 4.2 degrees fahrenheit

Answer 1

T = 41 - 29x

 

4.2 < 41 - 29x

-36.9 < -29x

1.268 < x