Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 1; local maximum at x = -1; concave up on (-?, ?)
B. Local minimum at x = 1; local maximum at x = -1; concave down on (0, ?); concave up on (-?, 0)
C. Local minimum at x = 1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0)
D. Local minimum at x = 1; local maximum at x = -1; concave down on (-?, ?)
Answer: C
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Starting in the year 2000, the number of speeding tickets issued each year in Middletown is predicted to grow according to an exponential growth model. During the year 2000, Middletown issued 200 speeding tickets 
Every year thereafter, the number of speeding tickets issued is predicted to grow by 10%.According to the model, approximately how many speeding tickets are likely to be issued in Middletown during 2025?
A. 700 B. 1970 C. 450 D. 2167 E. none of these
Solve the equation by completing the square. Express any complex numbers using i notation.x2 + 18x = -37
A. x = ±2
B. x = 2
± 9
C. x = -9 ± 2
D. x = -9 ± 2
A right triangle with acute angle ? is given. Evaluate the indicated trigonometric function of the acute angle ?.Find sin ?.
A. 
B. 
C. 
D. 
Write the equation for the shape described.The upper semicircle centered at (0, 0) with radius 3
A. y = -
B. y =
C. y =
D. y =