The price of 9-volt batteries is increasing according to the function below, where t is years after January 1, 1980. During what year will the price reach $4.00

“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 .