According to the information given, it is found that the temperature at 5 A.M. is of -20.1ºF.
Half of the current value is:
[tex]\frac{1}{2}(-13.4) = -\frac{13.4}{2} = -6.7[/tex]
Then, applying the change:
[tex]-13.4 - 6.7 = -20.1[/tex]
The temperature at 5 A.M. is of -20.1ºF.
A similar problem, in which the information given is used to build and solve an expression, is given at brainly.com/question/24812278