Which of the following is a definition of concave figures?
?
A. ?All line segments connecting two vertices in the figure lie outside the figure.
B. ?At least one line segment connecting two vertices in the figure lie outside the figure.
C. ?All line segments connecting two vertices in the figure lie inside the figure.
D. ?All line segments connecting two vertices in the figure lie both inside and outside the figure.
E. ?None of the above.
Answer: B
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Use a calculator to choose the equation whose graph is shown.
A. r = 3 sin ?
B. r = 
C. r = 
D. r = 
Perform the indicated operations and express your answer in the form a + bi. 
A. 8i
B. i
C. ±8
D. -8i
Solve the problem.Find the opposite.-21
A. -21 B. 21 C. 0 D. 1
Provide an appropriate response.Write the first five terms of the sequence whose general term is an = 
.
A. 2, - 2, 
, - 2, 
B. 4, 2, 
, 2, 
C. -2, 1, - 
, 1, - 
D. 4, - 2, 
, - 2, 