Perform the indicated operations. Write the resulting complex number in standard form. (3 + 9i) - (3 - 9i)
A. 18i
B. -81i
C. -18i
D. -6
Answer: A
Mathematics
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A. 7 B. 2 C. 6 D. 15
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Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = 
A. x-axis B. y-axis C. origin D. x-axis, y-axis, origin E. none
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Divide.
A. x3 - 27x2 + 7x - 50 B. x3 + 2x2 - 25x - 50 C. x3 - 25x2 + 2x - 50 D. x3 + 7x2 - 27x - 50
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Find the midpoint of the segment with the given endpoints.
and 
A. 
B. 
C. 
D. 
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