3. (0.5 Mark) Does MM tend to perform more or fewer expansions than Bi- A ? 4. (0.5 Mark) Did the heuristic-guided bidirectional algorithms deliver their promise of substantially reducing the number of expansions one needs to perform to solve a problem? 5. (1.0 Mark) Speculate on an explanation for the distribution of points in the scatter plot that compares long as your answer does not contain conceptual errors