A person walks at a constant rate 40 meters to West and then 70 meters to the North. The person's displacement is... 80 meters 30 meters 55 meters 110 meters

1) A student drove to the university from her home and noted that the odometer reading of her car increased by 15.8 km. The trip took 25.9 min. a) What was her average speed, in meters per second?  b) If the straight-line distance from her home to the university is 10.3 km in a direction 25° south of east, what was the magnitude of her average velocity in meters per second? c) If she drove back home using the same path she took out to the university and arrives 7.9 h after she first left home, what was her average speed for the entire trip, in meters per second?

need help on incorrect answers.

uber eats driver-completes her route by traveling 167 m in a direction 30⁰ north of east, 140 m 20 ⁰ west of north, and then 180 m west. What is her final location (magnitude and direction) relative to her starting location?