Simplify the fraction.
A. 
B. 
C. 
D. 
E. 
Answer: D
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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 telling the truth were found to be lying?
A. 71.4% B. 89% C. 11% D. 13.4%
A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the approximate number of bulbs that can be expected to last the period of time.Less than 200 hours
A. 4 bulbs B. 10 bulbs C. 4444 bulbs D. 25 bulbs
Find the largest open interval where the function is changing as requested.Decreasing y = 
+ 7
A. (0, ?) B. (7, ?) C. (-7, 0) D. (-7, 7)
Evaluate the radical expressions or indicate that the root is not a real number.-
A. -112 B. -15 C. 15 D. Not a real number