Question

if the temperature on the ground is 75°f,then the air temperature x miles high is given by T=75-29x.determine the altitudes at which the air temperature is less then 4°f.
the altitudes at which the air temperature is less then 4°f are more than___mi.

Answer 1

so here u need to find x given T<=4
hence
75-29x <= 4
or -29x <= 4-75
or -29x<=-71
or x>= 71/29
x>=2.448 appx

Answer 2

2.4