Simplify the expression. Assume that all variables are positive when they appear.

A. 8y4 
B. 8x3y4 
C. 8x7y8 
D. 8x3y4 

Answer: B

Mathematics

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A 1.5-mm layer of paint is applied to one side of the following surfaces. Find the volume of paint needed. Assume that x and y are measured in meters.The spherical zone generated when the upper portion of the circle x2 + y2 = 144 on the interval  is revolved about the x-axis.

A. ? m3
B. 432? m3
C. ? m3
D.  m3

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A. 39 square yards B. 24 square yards C. 32 square yards D. 36 square yards

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A. 10 gal B. 9 gal 3 qt C. 9 gal 2 qt D. 8 gal 2 qt

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