Simplify the root. 
A. 
B. x5
C. - 
D. - x5
Answer: B
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 
B. 
C. 
D. 
Solve by the substitution method.x - 4y = -37x - 3y = -21
A. ? B. {(x, y)|x - 4y = -3} C. {(3, -1)} D. {(-3, 0)}
Use the table to determine the probability. Round your answer to three decimal places if necessary.Students in a political science course were asked to describe their politics as "Liberal", "Moderate", or "Conservative." The results are displayed in the following table.
What is the probability that a selected student is a male who is considered a Liberal?
A. 0.261 B. 0.418 C. 0.434 D. 0.394
Solve the problem.Suppose a tank contains 100 gallons of a solution of 10 lb of salt dissolved in water, which is kept uniform by stirring. If pure water is allowed to flow into the tank at a rate of 3 gallons per minute, and the mixture flows out at a rate of 2 gallons per minute, find an expression for the amount of salt in the tank after t minutes.
A. y = 
B. y = 
C. y = 
D. y = 100 (t - 100)2