Answer:
[tex]T=T_{0} -3h[/tex]
Step-by-step explanation:
Let [tex]T_{0}[/tex] be the initial temperature and T be the current temperature.
Let h be the number of hours.
In 4 hours, the temperature has been going down 12 degrees.
In 1 hour, it has been going down 12/4 = 3 degrees.
In h hours, it has been going down 3h degrees.
So, the expressions that models this situation is:
[tex]T=T_{0} -3h[/tex]
