Determine whether the relation represents a function. If it is a function, state the domain and range.{(-2, 7), (1, 3), (3, -5), (7, -2)}
A. function
domain: {-2, 1, 3, 7}
range: {7, 3, -5, -2}
B. function
domain: {7, 3, -5, -2}
range: {-2, 1, 3, 7}
C. not a function
Answer: A
Mathematics
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A. 2 cos 4x B. -2 cos 4x C. -2 cos 2x D. 4 cos 4x
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A. 86.96 B. 86.90 C. 86.91 D. 86.86
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Draw the angle in standard position.-150°
A. 
B. 
C. 
D. 
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