Decide whether the relation defines a function.
A. Function
B. Not a function
Answer: A
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Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.f(x) = x4 - 3x3- 21x2 + 74x - 97
A. Approximate local maximum at 1.513; approximate local minima at -3.023 and 3.71 B. Approximate local maximum at 1.584; approximate local minima at -3.021 and 3.786 C. Approximate local maximum at 1.604; approximate local minima at -3.089 and 3.735 D. Approximate local maximum at 1.549; approximate local minima at -3.181 and 3.689
Write an equation for the quadratic function whose graph contains the given vertex and point.Vertex (-3, 5), point (3, 113)
A. P(x) = 3x2 + 18x + 32 B. P(x) = -3x2 + 18x + 5 C. P(x) = 3x2 - 18x + 32 D. P(x) = 3x2 + 3x + 5
Is it more profitable to receive $20,000 now or $30,000 in 10 years? Assume that money can earn 5% interest compounded semiannually.
A. $30,00 in 10 years B. $20,000 now
Solve.A one-way street passes under an overpass, which is in the form of the top half of an ellipse, as shown in the figure. Suppose that a truck 34 feet wide passes directly under the overpass. What is the maximum possible height of this truck to the nearest tenth of a foot? 
A. 10.2 ft B. 13.6 ft C. 6.8 ft D. 9.4 ft