Solve the problem.The diagram shows the roads connecting four cities.WX
YZThe matrix A below represents the number of routes between each pair of cities without passing through another city. 
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Calculate A2. What information is given by the entry in row 3, column 2 of A2?
A. There are 4 ways to travel between cities Y and X by passing through two cities
B. There are 2 ways to travel between cities Y and X by passing through at most one city
C. There are 4 ways to travel between cities Y and X by passing through one city
D. There are 2 ways to travel between cities Y and X without passing through another city
Answer: C
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Determine if the graph of the function is concave up or concave down.y = x2 - 4x + 4
A. Concave down B. Concave up
Solve the system by the elimination method.8x = 8y + 98x = 8y - 4
A. ?
B. 
C. {(8, 9)}
D. 
Find three ordered pairs that satisfy the equation.
?
What will be an ideal response?
Solve the equation.
x = 
A. {2}
B. 
C. 
D. {-2}