Use the rational zero theorem, Descartes's rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the equation.3x4 - 20x3 + 44x2 - 80x + 128 = 0
A. 
, 4, -2i, 2i
B. 
, 4, -4i, 4i
C. 
, 4, -i, i
D. - 
, -4, -2i, 2i
Answer: A
Mathematics
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For the given set of ordered pairs, determine whether a function could be defined for which the input would be an x-coordinate and the output would be the corresponding y-coordinate.{(-6, -1), (-2, 2), (1, 5), (6, 7)}
A. Yes B. No
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Graph the system of inequalities.4x + 3y ? 12x ? y 
A. 
B. 
C. 
D. 
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Solve.-13 = 4y + 3
A. - 
B. -4
C. -20
D. - 
Mathematics
Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = 4x7 - 3x4 + x + 5
A. 2 or 0 positive zeros, 1 or 0 negative zeros B. 3 or 1 positive zeros, 3 or 1 negative zeros C. 2 or 0 positive zeros, 2 or 0 negative zeros D. 2 or 0 positive zeros, 1 negative zero
Mathematics