The double integral gives the mass of a lamina R. Determine the density ?, the mass, and the center of mass.
A. k; 2k; 
B. k; 2k; 
C. 2k; 2k; 
D. k; 4k; 
Answer: B
Mathematics
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Solve the application problem.The net income y (in millions of dollars) of Pet Products Unlimited from 1997 to 1999 is given by the equation 
where x represents the number of years after 1997. Assume this trend continues and predict the year in which Pet Products Unlimited's net income will be $256 million.
A. 2003 B. 2000 C. 2002 D. 2001
Mathematics
Simplify the complex rational expression.
A. 
B. 6x + 8y
C. 8x + 6y
D. 
Mathematics
Write an equation for the illustrated plane.
A. x + z = -3 B. x + z = 3 C. y = 3 D. x + z = 3 and y = 0
Mathematics
Solve for real roots.x - 2x1/2 - 8 = 0
A. x = 12 B. x = 32 C. x = 16 D. x = 8
Mathematics