Answer:
You have a displacement of 5 units to the right.
Explanation:
First you go three to the right which lands on the 3 mark. Then you move it 4 to the left which substracts 4, landing the object at -1. Finally you move 6 to the right, and you finish at marker 5. Since displacement is not total distance but just final distance from the start point directly to end point, it is only a displacement of 5.
A smaller bell size would have a higher pitch relative to a larger bell because the smaller surface area makes for smaller vibrations in the metal, which have a higher frequency.
Given a model that looks like that, I do experience severe upset. I'm not throwing up yet, but it's only a matter of time.