Evaluate the radical expressions or indicate that the root is not a real number.
A. 2
B. -2
C. -8
D. Not a real number
Answer: B
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Solve the problem.A plane takes off from an airport on the bearing S29°W. It continues for 20 minutes then changes to bearing 
and flies for 2 hours 20 minutes on this course then lands at a second airport. If the plane' s speed is 420 mph, how far from the first airport is the second airport? Round your answer correct to the nearest mile.
A. 1010 mi B. 1111 mi C. 1011 mi D. 1110 mi
Use both the addition and multiplication properties of inequality to solve the inequality. Graph the solution set on a number line.15n + 24 ? 3(4n + 10)
A. (2, ?)
B. (-?, 2) 
C. [2, ?)
D. (-?, 2] 
Find the exact value of the square root without a calculator.-
A. -6 B. 18 C. -18 D. 6
Answer the question.The table shows the number of pupils per teacher in selected states.
For which states are the values not less than 16.7?
A. Alaska, Texas, Wyoming, Maine, Missouri B. California, Idaho C. Texas, Wyoming, Maine, Missouri D. Alaska, California, Idaho