Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 3x3 - 7x2 + 4x + 6
A. 0 or 1 positive; 0 or 1 negative
B. 0 or 2 positive; 1 negative
C. 0 or 1 positive; 2 negative
D. 0 positive; 1 or 2 negative
Answer: B
Mathematics
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Find the equation of the parabola determined by the given information.Vertex at the origin, focus at (0, 
)
A. y = 
x2
B. x = 
y2
C. y = 
x2
D. y = 28x2
Mathematics
y? is a solution of the differential equation.
?
?
A. ?True B. ?False
Mathematics
Solve the inequality. Express the answer in interval notation.
x + 1 ? 
x - 1
A. (-?, 
B. (-?, 
C. 
, ?)
D. 
, ?)
Mathematics
Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics