A billiard ball travels 0.46 m in the +x direction, having started at the origin (x = 0), bounces off another ball to travel 0.84 m in the opposite direction, then bounces from the edge of the billiard table finally coming to rest 0.12 m from that edge. The entire motion is one-dimensional and takes 2.5 s. Determine the billiard ball's (a) average speed, (b) final position, (c) average velocity.