Find the product. Assume all variables have non-negative values.(
+ 
)(
- 
)
A. 10
B. 8 - 2
C. 8 - 8
D. 6
Answer: D
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Evaluate the given double integral by changing it to an iterated integral.
S is the region bounded by the x-axis, the line 
and the curve 
A. 10 B. 8 C. 9 D. 1
Solve.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 7 hours and uses 70 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 5 hours.
A. 60 gallons B. 2 gallons C. 98 gallons D. 50 gallons
Factor the expression completely, if possible.a3 - 6a2b + 9ab2
A. a(a + 3b)2 B. ab(a - 3)2 C. a(a - 3b)2 D. Does not factor
Solve.While looking through the properties of her 3 - 1/2 inch diskette, Amy noticed that 
of the space on the disk was not being used. She deleted four files that were using 
of the disk space. What fractional part of the disk space was free after she deleted the four files?
A. 
of the disk was free
B. 
of the disk was free
C. 
of the disk was free
D. 
of the disk was free