Find the domain of the function.f(x) = 
A. {x|x ? -12}
B. all real numbers
C. {x|x > -12}
D. {x|x ? 0}
Answer: B
Mathematics
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Match the equation with the surface it defines.
+ 
= 
A. Figure 4 B. Figure 3 C. Figure 2 D. Figure 1
Mathematics
Find the vertex, focus, and directrix of the parabola. Graph the equation.(y + 1)2 = -8(x + 2)
A. vertex: (1, 2)
focus: (-1, 2)
directrix: x = 3
B. vertex: (-2, -1)
focus: (-2, -3)
directrix: y = 1
C. vertex: (2, 1)
focus: (2, -1)
directrix: y = 3
D. vertex: (-2, -1)
focus: (-4, -1)
directrix: x = 0
Mathematics
Find the domain of the rational function.f(x) = 
A. all real numbers B. {x|x ? 0, x ? -16} C. {x|x ? -4, x ? 4} D. {x|x ? -4, x ? 4, x ? -7}
Mathematics
Use a graphing utility to find the inverse, if it exists, of the matrix. Round answers to two decimal places.
A. 
B. 
C. 
D. 
Mathematics