Its D 15+15+15= 45 so there for it will be 45
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.
The answer is C.
TUWV ~ DEFG; 6:4.5
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2 x 3 = 6
6 x 3 = 18
18 x 3 = 54
The answer is 54
9×7=63
63÷2=31.5
31.5×4=126
7×7=49
126+49=175
175 is the answer