Solve the equation or inequality.
= 7
A. -4, 0
B. 4, 0
C. ?
D. -4, 4
Answer: A
Mathematics
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Solve the problem.In a survey, people are asked to rank 6 issues such as the economy and the environment in order of importance. Replies are filed in folders, and two replies are put in the same folder if and only if they give the same ranking to all 6 issues. Find the maximum number of folders that might be needed.
A. 720 B. 6 C. 5040 D. 36
Mathematics
Find the mean of the set of data.229, 219, 213, 213, 213, 213, 219, 216, 216, 216, 219, 219Round your answer to one decimal place.
A. 217.1 B. 216.9 C. 218.0 D. 217.2
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression. Write your answer without exponents.
-3
A. 
B. 
C. 
D. 
Mathematics