Eva say it's $60 each week since she needs to save at least $2400 to go on a trip to Europe she will need to say 40 weeks

“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 .