A dolphin wants to swim directly back to its home bay, which is 0.800 km due west. It can swim at a speed of 7.00 m/s relative to the water, but a uniform water current flows with speed 2.83 m/s in the southeast direction.

a) What direction should the dolphin head? Enter the angle in degrees where positive indicates south of west and negative indicates north of west.
b) How long does it take for the dolphin to swim the 0.800-km distance home?