Solve.A water tank can be filled in 5 minutes and emptied in 8 minutes. If the drain is accidentally left open when the tank is being filled, how long does it take to fill the tank?
A. 26 min
B. 3 min
C. 15 min
D. 13.33 min
Answer: D
Mathematics
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Reverse the order of integration and then evaluate the integral.
A. 
B. ln 3
C. ln 3 - 1
D. 
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The data in the figure below represents the annual salaries of 200 professional musicians.
Give the length of of each class interval in the bar graph (in dollars).
A. $90,000 B. $20,000 C. $5 D. $10,000 E. $9999
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Round the number as requested.627 to the nearest hundred
A. 700 B. 500 C. 610 D. 600
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Solve the inequality, and graph the solution set.3x2 + 7x - 6 ? 0
A. 
B. 
C. (-?, -3] ? 
D. [-3, ?)
Mathematics