Add or subtract as indicated. Express the answer as a single polynomial in standard form.(13x8 + 2x6 - 7x2 + 6) - (7x8 - 9x5 + 7x2 - 12)
A. -6x8 + 2x6 - 9x5 - 14x2 + 18
B. 6x8 + 2x6 - 9x5 - 14x2 + 18
C. 6x8 + 2x6 + 9x5 - 14x2 + 18
D. -6x8 + 2x6 + 9x5 - 14x2 + 18
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Find the indicated limit if it exists.
A. 
B. 
C. does not exist
D. - 
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Use the distance formula to find the length of the line segment. Express your answer as a simplified radical. 
A. 60
B. 60
C. 2
D. 10
Mathematics