Choose the graph that represents the given function without using a graphing utility.f(x) = 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The table below shows the result of a polygraph test conducted on 2000 college students. Students were asked whether they had ever cheated on a test. All of them denied having cheated. Use the table to answer the question. 
What percentage of those that were found to be lying were actually telling the truth?
A. 88.3% B. 15.2% C. 74.1% D. 84.8%
Complete the magic (addition) square. A magic square has the property that the sum of the numbers in any row, column, or diagonal is the same.Use each number 19, 20, 21, 22, 23, 24, 25, 26, and 27 once.
A. 
B. 
C. 
D. 
Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = cos
A. 1
B. 
C. 0
D. No limit
Answer the question.If n is an even number, then which of the following statements is true?
A. The equation xn + 1 = 0 has at least one real root. B. The equation xn + 1 = 0 has exactly one real root. C. The equation xn + 1 = 0 has n + 1 roots. D. The equation xn + 1 = 0 has n nonreal roots.