Solve the problem.A water tank can be filled in 6 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. 
min
B. 
min
C. 
min
D. 24 min
Answer: D
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Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.The Wellspring Company's fleet of trucks get 20, 13, 19, 14, 20, 13, and 21 miles per gallon. What is the mean miles per gallon for the fleet? Round to the nearest whole number.
A. 16 miles per gallon B. 18 miles per gallon C. 20 miles per gallon D. 17 miles per gallon
Solve.A boat goes 560 miles downstream in the same time it can go 490 miles upstream. The speed of the current is 3 miles per hour. Find the speed of the boat in still water.
A. 105 mph B. 48 mph C. 42 mph D. 45 mph
Determine if the vertex of the graph is a maximum point or a minimum point.y = x2 - 2x + 1
A. Maximum B. Minimum
Perform the indicated operation and write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 