Determine the vertex, focus, and directrix of the parabola and sketch its graph.(x + 3)2 = -16(y - 1)
A. vertex: (3, -1)
focus: (3, -5)
directrix: y = 3
B. vertex: (1, -3)
focus: (1, -7)
directrix: y = 1
C. vertex: (-3, 1)
focus: (-3, 5)
directrix: y = -3
D. vertex: (-3, 1)
focus: (-3, -3)
directrix: y = 5
Answer: D
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Simplify. Your answer should be in lowest terms.6
+ 6
A. 12
B. 13
C. 12
D. 12
Refer to the graph of the linear function defined by 
or the graph of the linear functions defined by 
and 
to solve the equation or inequality.
y1 ? y2
A. (6, ?) B. (-?, ?) C. ? D. (-5, ?)
Find the indicated probability.The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement 
Suppose one of these people is selected at random. Compute the probability that the person selected was a store clerk.
A. 0.259 B. 0.316 C. 0.026 D. 0.099
Determine the limit algebraically, if possible.
A. Does not exist
B. 1
C. 0
D. 