Find the vertex, focus, and directrix of the parabola with the given equation.(y + 3)2 = -4(x - 2)
A. vertex: (-3, 2)
focus: (-4, 2)
directrix: x = -2
B. vertex: (2, -3)
focus: (3, -3)
directrix: x = 1
C. vertex: (2, -3)
focus: (1, -3)
directrix: x = 3
D. vertex: (-2, 3)
focus: (-3, 3)
directrix: x = -1
Answer: C
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Use implicit differentiation to find dy/dx.x3 + 3x2y + y3 = 8
A. - 
B. - 
C. 
D. 
Solve the problem.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. The linear model for this data is 
where x is entering GPA and y is current GPA. Use this model to predict current GPA of a student whose entering GPA is 3.1.Entering GPACurrent GPA 
A. 3.57 B. 3.77 C. 3.39 D. 3.28
Evaluate the expression.
-4/3
A. 
B. not a real number
C. - 
D. 
Find the quotient.
A. 
B. x + 7
C. x + 6 + 
D. x + 6 - 