What is the explicit rule for the geometric sequence if the fifth term of a geometric sequence is 5. the sixth term is 2.5

There is no graph to go along with this

“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 .