Francis heard that a car stereo system was on sale for 30% off. If the original price was $62.40, what was the sale price of the stereo?

Letter a i would say

“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 .