Answer:
40 children went on the cruise.
Step-by-step explanation:
This question can be solved by a system of equations.
I am going to say that:
x is the number of adults on the cruise
y is the number of children on the cruise.
57 tickets were sold:
This means that
, and since we want the number of children y, 
Each adult had to pay $22 for the cruise and each child had to pay $10. The company's total receipts were $774.
This means that:

Since 





40 children went on the cruise.
Answer:
C) Mapping
Step-by-step explanation:
Answer:
a line passing through (negative 4, 2), (0, 0) and (4, negative 2).
Step-by-step explanation:
A function exhibiting direct variation MUST pass through the origin, (0, 0), and the graph must be a straight line. The answer that satisfies these requirements is
a line passing through (negative 4, 2), (0, 0) and (4, negative 2).
Answer:
3
Step-by-step explanation:
ABC
Acb
Bac
Bca
Cab
Cba
This looks like 6 but if you look close, 3 are duplicates