The temperature falls from 0 degrees to -12.4 degrees in 13 1/2
hours. Which expression finds the change in temperature per
hour?

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .