25km east + 25km return+ 40km west + 40km return = 130km
Hope that helped :)
F(x)=x-3 I think but I am not sure
The circumcenter is also center of the triangles circumcircle. i'm not 100% but if this is one of your answers then i hoped this helped!
Answer:
I would assume you're referring to this test? if so the answer is
a, d and e