Determine whether the graph represents a function.
A. Yes
B. No
Answer: A
Mathematics
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Solve the problem.The diameter of a tree was 8 in. During the following year, the circumference increased 
About how much did the tree's diameter increase? (Leave your answer in terms of ?.)
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Mathematics
Find the center and radius of the circle.x2 - 2x + y2 - 14y + 25 = 0
A. (1, 7), r = 5 B. (1, 7), r = 25 C. (-1, -7), r = 5 D. (-1, -7), r = 25
Mathematics
Solve the system of equations by graphing. If the system is inconsistent or the equations are dependent, say so.
x - 
y = 5
x + 
y = 12
A. {(4, 3)} B. {(3, 4)} C. {(3, 1)} D. {(4, -3)}
Mathematics
The birthrates in the country for the years 1981-1990 are:
Mathematics