Find the largest open interval where the function is changing as requested.Decreasing f(x) = - 
A. (-?, -3)
B. (3, ?)
C. (-?, 3)
D. (-3, ?)
Answer: D
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Perform the indicated operations.0.0089 × 0.016
A. 0.00000142 B. 0.001424 C. 0.00001424 D. 0.0001424
Solve the problem.Sue wants to add a decorative wallpaper border to her living room. Refer to the diagram below for the dimensions of Sue's living room. How many feet of wallpaper border will she need?
A. 42 ft B. 36 ft C. 44 ft D. 40 ft
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 1)2 = 16(x + 2)
A. vertex: (2, 1) focus: (6, 1) directrix: x = -2 B. vertex: (-2, -1) focus: (2, -1) directrix: x = -6 C. vertex: (-2, -1) focus: (-6, -1) directrix: x = 2 D. vertex: (-1, -2) focus: (3, -2) directrix: x = -5
Find the standard equation of the circle with the given radius r and center C.r = 
C = (9, -7)
A. (x + 7)2 + (y - 9)2 = 169 B. (x - 9)2 + (y + 7)2 = 13 C. (x + 9)2 + (y - 7)2 = 13 D. (x - 7)2 + (y + 9)2 = 169