Displacement vector A is directed to the west and has magnitude 2.56 km. A second displacement vector

Question:

Displacement vector A is directed to the west and has magnitude 2.56 km. A second displacement vector is also directed to the west and has magnitude 7.44 km.
(a) What are the magnitude and direction of A + B?
(b) What are the magnitude and direction of A − B?
(c) What are the magnitude and direction of B − A?