For the function, find the interval(s) for which f'(x) is positive.f(x) = 
x3 - 2x2 - 5x + 4
A. (-1, ?)
B. (-5, ?)
C. (-?, 1) and (5, ?)
D. (-?, -1) and (5, ?)
Answer: D
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Indicate whether the graph of the equation is a parabola, circle, ellipse, or hyperbola.4y2 = 100 + 4x2
A. ellipse B. circle C. parabola D. hyperbola
Analyze the graph of the given polar curve. Include the following information: If possible, describe the shape of the graph (circle, rose curve, limacon, etc.), and state the domain, range, and maximum r-value of the graph. State whether the graph is continuous and whether it is bounded. Describe any symmetry that the graph has. Give the equations of any asymptotes or state that the graph has no asymptotes.r = -3 cos 5?
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Simplify the expression.90
A. 9 B. -1 C. 0 D. 1