What's the inverse for this f(x)=5/7x+8

To find the inverse, interchange the variables and solve for y. You should get

f^-1 (x)= -56/5 + 7x/5

“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 .