A car travels along a straight, level road. The car begins a distance x - 25 m from the origin at t - 0.0 s. At t - 5.0 s, the car is at x - 100 m; at t - 8.0 s, it is at x - 300 m. Find the average velocity of the car during the interval from t - 0.0 s to t - 5.0 s and during the interval from t - 5.0 s to t - 8.0 s.