Solve the problem.The radius r of a plastic tube used in manufacturing a child's toy must not differ from the standard s by more than 3 millimeters. The manufacturing engineers express this as 
Find the limits of r if the standard s is 37.
A. 34 ? r ? 40
B. 31 ? r ? 34
C. r ? 34 or r ? 40
D. r ? 31 or r ? 34
Answer: A
Mathematics
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Graph the solution set of the system of inequalities.y ? log xy ? ?x - 5?
A. 
B. 
C. 
D. 
Mathematics
Answer the question.Consider the numbers 19, 
, -20, 0, 
, 
. Which are integers but not natural numbers?
A. -20, 0, 
B. -20, 0, 
C. 19, 
D. -20
Mathematics
Fill in the blank with one of the words or phrases listed below. 
To convert from one unit to another, 
may be used.
A. mass B. volume C. unit fractions D. transversal
Mathematics
Graph the solution set of the system of inequalities.
A. 
B. 
C. 
D. 
Mathematics