Answer:
8,185,320 different leadership structures
Step-by-step explanation:
Since the order at which the members of the committee are chosen matters, this is a permutation of 4 out 55 people and it is given by:

8,185,320 different leadership structures are possible.
Answer:
7
Step-by-step explanation:
Answer:
it going down dividing by 2
Step-by-step explanation:
Answer: Stay the same, 100
Step-by-step explanation: well 7%-7% still equals zero. So it’s not effected, I think.
Answer: 3/2a3
I can't properly write the answer sorry but it's the last one.