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 = 3; local maximum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3)
B. Local maximum at x = 3; local minimum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3)
C. Local minimum at x = 3; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0)
D. Local minimum at x = 3; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0)
Answer: C
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Evaluate the integral. 
A. ln 
- 
+ C
B. 
- 5 sec -1 
+ C
C. 
- 5 sec -1 
+ C
D. ln 
- 
+ C
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = ln(3x - 2)x2 + 3y2 = 7
A. x = 0.74, y = -1.47; x = 1.73, y = 1.16 B. x = 1.73, y = -1.16; x = 0.74, y = 1.47 C. x = 5.25, y = 2.62 D. x = 0.77, y = 1.46; x = -0.59, y = -1.49
Find two different spanning trees for the graph.
What will be an ideal response?
Simplify the algebraic expression by collecting and combining like terms.(3x - 8y + 6) - 2(-3x + 8y - 6)
A. 9x - 24y + 18 B. -6x + 16y - 12 C. -9x + 24y - 18 D. 6x - 16y + 12