Rate of change = .
The temperature changes from to 0mi and the time changes from 3h to 0h.
Rate of change =
Rate of change = . (Divide: )
So, the rate of change is , or a decrease of .
The rate of change is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f52fdc1615a689a14ec0644ff507779c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5eef9397c44869b91fc127800c2778e5.png\")
to 0mi and the time changes from 3h to 0h.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=edb420dc7176a35d62856e29e17d6c8f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9f044c7696df53ba2658cbc6491cc453.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2db5808876261e8831a9715f6d366e32.png\")
. (Divide: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3687151de8758cb6e99a0ed9f3d08f37.png\")
)![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2db5808876261e8831a9715f6d366e32.png\")
, or a decrease of .![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
.