Solve the problem.What can you say about the inflection points of the quartic curve 
Give reasons for your answer.
What will be an ideal response?
The curve can have 0 or 2 inflection points. The second derivative is quadratic, 
and quadratics may have 0, 1, or 2 roots, depending on the value of the discriminant. If 
then y " has no real roots and y has no inflection points. If 
then y " has exactly one real root and y has a single inflection point. Finally, if 
then y " has two real roots and y has exactly two inflection points.
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Find the standard deviation. Round to one more place than the data.196, 205, 215, 185, 229, 278, 165
A. 36.2 B. 30.2 C. 12.7 D. 33.1
Refer to the figure to answer the question. Line DH is parallel to line IM. Line BO is perpendicular to line DH.
m?IJN is 57°. What is the measure of ?DEJ?
A. 33° B. 57° C. Cannot be determined D. 123°
By making a table of both the left and right sides of the equation, conjecture if the equation represents an identity. cos2 ? + cot2 ? + sin2 ? = csc2 ?
A. Yes B. No
Write the number in expanded form.90,780
A. 90,000 + 700 + 80 B. 9000 + 70 + 8 C. 90,000 + 7000 + 80 D. 9000 + 700 + 8