Is someone able to explain these two questions?

4. An airplane is on a heading of 030 at an airspeed of 800 km/h. There is a wind of 75 km/h from a bearing of 315. Find the resultant Velocity (magnitude of direction) of the airplane. Write the direction as a bearing.

5. a 30 N sign is suspended from a ceiling by two cables that are 2 m long. the cables are attached to the ceiling by bolts that are 3 m apart. Determine the tension in each cable.