Simplify the expression. Assume that all variables are positive.(4x4y4)1/2
A. 2x2y2
B. 2x2y
C. 2x4y2
D. x2y2
Answer: A
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A. Valid B. Invalid
Add. 3 + 2 + (-6)
A. -5 B. 7 C. 11 D. -1
Solve the problem.On March 10, Henry rented a van with a full tank of gas and 15,292 miles on the odometer. On March 14, he returned the van with 15,662.4 miles on the odometer. The rental agency charged Henry 
for the rental and needed 10 gallons to fill up the tank. What was the van's rate of gas consumption in miles per gallon? Round to the nearest tenth when necessary.
A. 0 mpg B. 370.4 mpg C. 48.7 mpg D. 37 mpg
Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 10 feet by 20 feet and the area of the rug is 96 square feet, how wide will the border be?
A. 4.5 ft B. 4 ft C. 2 ft D. 3 ft