Simplify the rational expression.
A. 
B. 
C. 
D. 
Answer: C
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As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The sampling proportion is
A. 15%. B. 25%. C. 75%. D. 22%. E. none of these
Simplify.
A. 
B. 
C. 
D. 
Graph the function.f(x) = log5(x + 1)
A. 
B. 
C. 
D. 
Solve the problem.31% of a store's computers come from factory A and the remainder come from factory B. 2% of computers from factory A are defective while 1% of computers from factory B are defective. If one of the store's computers is selected at random, what is the probability that it is not defective and from factory A?
A. 0.987 B. 0.304 C. 0.98 D. 0.006