Simplify the radical. Assume that all variables represent nonnegative real numbers. 
, n ? 0
A. 
B. 
C. 
D. 
Answer: A
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Write a system of equations to describe the problem situation. It is not necessary to solve the problem. Restaurants buy 10-pound and 25-pound bags of carrots. They want five times as many 10-pound bags (x) as 25-pound bags (y). If the company estimates that restaurants will buy 450 pounds of carrots, how many bags of each size should be packaged?
Find the cube root.
A. 
B. 
C. 
D. 
Perform the indicated conversion between American and metric units of length.284 miles to kilometers (Round to the nearest thousandth.)
A. 157.778 B. 176.507 C. 456.956 D. 513.756
Solve.An express train travels 462 miles between two cities. During the first 
of a trip, the train traveled through mountainous terrain. The train traveled 
per hour slower through mountainous terrain than through level terrain. If the total time to travel between the cities was 9 hours, find the speed of the train on level terrain.
A. 38 mph B. 78 mph C. 58 mph D. 18 mph