Convert the polar equation to a rectangular equation.r = -8 cos ?
A. 
2 + y2 = 64
B. x = -8
C. x2 + y2 = 8
D. 
2 + y2 = 16
Answer: D
Mathematics
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Simplify the expression by using the order of operations.7 ? 14 ÷ 
- 10 ÷ 2 + (12 - 8)
A. 23 B. 20 C. 13 D. 6
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Write the Hindu-Arabic numeral that the given Roman numeral represents.
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A. 42,601 B. 6601 C. 41,601 D. 43,601
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Round the whole number to the given place value.A publishing company sold 26,267,591 books. Round the number of books sold to the nearest ten-million.
A. 30,000,000 B. 26,000,000 C. 26,270,000 D. 20,000,000
Mathematics
For the given expression, write two equal expressions with negative signs in different places.
A. - 
and - 
B. - 
and 
C. 
and 
D. - - 
and 
Mathematics