If n is an integer, n ? 180° represents an integer multiple of 180°, and 
represents an odd integer multiple of 90°. Decide whether the expression is equal to 0, 1, -1, or is undefined. cot(n ? 180°)
A. 0
B. 1
C. -1
D. Undefined
Answer: D
Mathematics
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Determine whether the equation is quadratic.x2 - 3x - 3 = 0
A. Yes B. No
Mathematics
Factor the polynomial completely.y6 + 1
A. (y + 1)(y - 1)(y2 + y + 1)(y2 - y + 1) B. (y + 1)(y - 1)(y4 - y2 + 1) C. (y2 + 1)(y4 - y2 + 1) D. (y3 + 1)(y3 - 1)
Mathematics
Evaluate.
+ 
? 
A. 
B. 
C. 
D. 
Mathematics
Write an equivalent expression. Use an associative law.a + (b + 7)
A. (b + 7) + a B. a + (7 + b) C. (a + b) + 7 D. a(b + 7)
Mathematics