Determine where the function is increasing and where it is decreasing.f(x) = -x2 - 6x - 8
A. increasing on (1, ?)
decreasing on (-?, 1)
B. increasing on (-?, 1)
decreasing on (1, ?)
C. increasing on (-?, -3)
decreasing on (-3, ?)
D. increasing on (-3, ?)
decreasing on (-?, -3)
Answer: C
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Solve the system using Gaussian elimination.
A. {(6, 7, 9)} B. ? C. {(-6, 9, 12)} D. {(6, 9, 7)}
Solve the problem.A rectangular carpet has a perimeter of 242 inches. The length of the carpet is 99 inches more than the width. What are the dimensions of the carpet?
A. 110 inches by 11 inches B. 66 inches by 77 inches C. 110 inches by 121 inches D. 115.5 inches by 121 inches
Factor by any method.81k2 - 169m2
A. (9k - 13m)2 B. (9k + 13m)2 C. (81k + m)(k - 169m) D. (9k + 13m)(9k - 13m)
Find the x- and y-intercepts, and graph the equation.y = -3
A. None; (0, -3)
B. (-3, 0); none
C. (-3, 0); none
D. None; (0, -3)