Simplify the expression. Assume that variables represent nonzero numbers.
2
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the system using the graphing method. 2x + y = -4 5x - 2y = -37
A. {(1, -6)}
B. {(5, 6)}
C. {(-5, 6)}
D. {(-5, -6)}
Mathematics
Solve the problem.The population of a particular species of insect was 10,000 in 1960. In 1980, there were 1600 fewer, and this year, there are 3400 fewer. What is the current population?
A. 11,800 insects B. 5000 insects C. 8200 insects D. 15,000 insects
Mathematics
Solve the problem.A certain ball when dropped from a height rebounds 
of the original height. How high will the ball rebound after the fifth bounce if it was dropped from a height of 32 feet? Round your answer to the nearest tenth of a foot.
A. 5.4 ft B. 6.7 ft C. 3.4 ft D. 7.7 ft
Mathematics
Perform the indicated operation.
?
?
A. 4 B. 3 C. -2 D. 2 E. 0
Mathematics