Simplify the expression. Assume that all variables are positive when they appear.
A. 13
B. 
C. 13
D. 
Answer: D
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Solve the problem.The flow F of a fluid in a plane is illustrated below. At which point or points would 
point towards the reader, perpendicular to the page?
A. C B. A C. B D. A and C
Find average for each set of numbers.170, 129, 151, 158, 167
A. 155 B. 158 C. 165 D. 154
Solve the problem.For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She asked them if they were happy or unhappy with their occupation. Of the 56 lawyers interviewed, 14 were unhappy, however, only 8 of the salesmen were unhappy. Suppose that one of the persons interviewed is selected at random. Find the probability that the person selected is a salesman.
A. 0.51 B. 0.44 C. 0.4 D. 0.36
Complete. Round to the nearest tenth if necessary.2 acres = 
m2
A. 118.9 B. 8,000.0 C. 26,552.9 D. 13,503.6