Graph the system of inequalities, and find the coordinates of the vertices.3y - x ? 9,y + 2x ? 10,y ? 0
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Perform the indicated operation.-2 - 13
A. 11 B. 15 C. -11 D. -15
Mathematics
Determine the standard equation of the hyperbola with the given characteristics and sketch the graph.The center is at (0, 0), a vertex is at (0, 4), and a focus is at (0, -
).
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Find the indicated term of the arithmetic sequence.Given an arithmetic sequence with d = 8 and a5 = 28, find a20.
A. 148 B. 157 C. 232 D. 237
Mathematics
Solve. Write results using scientific notation.The national debt of a small country is $7,150,000,000 and the population is 2,304,000. What is the amount of debt per person?
A. $3.10 x 106 B. $3.10 x 103 C. $3.10 D. $31.00 x 102
Mathematics