Find the coordinates of the vertex of the quadratic function.f(x) = 11(x - 5)2 + 9
A. (11, 5)
B. (9, -5)
C. (-5, 9)
D. (5, 9)
Answer: D
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Find 
and 
.f(x, y) = sin2 (6xy2 - y)
A. 
= 12y2sin (6xy2 - y) cos (6xy2 - y); 
= 2sin (6xy2 - y) cos (6xy2 - y)
B. 
= 2sin (6xy2 - y) cos (6xy2 - y); 
= (24x - 2) sin (6xy2 - y) cos (6xy2 - y)
C. 
= 2sin (6xy2 - y) cos (6xy2 - y); 
= 2sin(6xy2 - y) cos(6xy2 - y)
D. 
= 12y2sin (6xy2 - y) cos (6xy2 - y); 
= (24xy - 2) sin (6xy2 - y) cos (6xy2 - y)
Find the volume of the geometric solid. If needed, use 3.14 as an approximation for ? and round the answer to the nearest tenth.Cone: r = 5 in., h = 11 in.
A. 575.7 in3 B. 431.8 in3 C. 287.8 in3 D. 115.1 in3
Find the largest open interval where the function is changing as requested.Decreasing y = 
+ 7
A. (0, ?) B. (7, ?) C. (-7, 0) D. (-7, 7)
Add or subtract as indicated.-0.39 - (0.36)
A. -0.75 B. -0.1404 C. 0.13 D. 0.03