Find the real solutions of the equation.
= -1
A. {-2}
B. {-1}
C. {2}
D. {1}
Answer: A
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Determine whether the statement is a self-contradiction, an implication, a tautology (that is not also an implication), or none of these.(p ? q) ? ~q
A. None of these B. Self-contradiction C. Tautology D. Implication
Determine whether the relation represents a function. If it is a function, state the domain and range.{(4.22, 11.42), (4.222, -11.4), (
, 0), (0.71, -4)}
A. function
domain: {4.22, 4.222, 
, 0.71}
range: {11.42, -11.4, 0, -4}
B. function
domain: {11.42, -11.4, 0, -4}
range: {4.22, 4.222, 
, 0.71}
C. not a function
Solve the problem.The area of a triangle with vertices (x1, y1), (x2, y2), and (x3, y3) is 
,where the symbol ± indicates that the appropriate sign should be chosen to yield a positive area. Use this formula to find the area of a triangle whose vertices are (6, 5), (8, -6), and (-7, -8).
A. 
B. 
C. 169
D. 5
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-3
A. 
B. 
C. 
D. 