Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. 
+ 5 ? 8
A. {x
x ? -1}; (-?, -1]
B. {x
x < 8}; (-?, 8)
C. {x
x ? 6}; (-?, 6]
D. {x
x ? 6}; [6, ?)
Answer: C
Mathematics
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Replace the polar equation with an equivalent Cartesian equation. 7r cos ? + 8r sin ? = 1
A. 7x + 8y = 1
B. 7y + 8x = 1
C. 7x + 8y = x2 + y2
D. 
+ 
= 1
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Write the number as a binary number.1628
A. 1,110,0112 B. 1,110,0102 C. 1,111,0102 D. 1,111,0112
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Solve the problem.How many of the polygons below have exactly two lines of symmetry?
A. 2 B. 4 C. 3
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Perform the division. Write the answer with positive exponents.
A. 6x3 + 20x9 - 35x7 + 40x5 + 7x4
B. 6x3 + 4x2 - 7 + 
+ 
C. 6x3 + 4x2 - 7
D. 30x10 + 4x2 - 7 + 
+ 
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