Write a linear inequality that describes the shaded region.
A. y ? -2x - 2
B. y ? 2x - 2
C. y ? -2x + 2
D. y ? -2x + 2
Answer: C
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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 (-?, -3) and (3, ?); concave down on (-3, 3) B. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (-?, -3) and (3, ?); concave up on (-3, 3)
Decide whether the pair of lines is parallel, perpendicular, or neither.y = 9 and 9 - y = -3
A. Parallel B. Perpendicular C. Neither
Use the quotient rule and the product rule to simplify the radical.
A. 
B. 
C. 
D. 
Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (4, 8, 4) B. (7, -4, -8) C. (8, 2, 8) D. (7, 4, 8)