Answer:
180/7
Step-by-step explanation:
Comment if you want it, but it's very long.
0.405, 0.45 , 0.5 , 4.5 : Least to greatest!
Option B:
is the rule for the translation
Explanation:
The coordinates of A,B,C are
,
, 
The coordinates of A',B',C' are
,
, 
We need to determine the rule for the translation
The rule for the translation is given by

Let us determine the translation from A to A'

Thus, we have,
and 
Thus, the rule is given by

Therefore, Option B is the correct answer.
I believe 156 because each person would have had to make 12 phone calls and there are 13 people so 12x13