Find the vertex, focus, and directrix of the parabola. Graph the parabola.(y + 1)2 = -(x + 1)
A. vertex: (1, 1)
focus: (0.75, 1)
directrix: x = 1.25
B. vertex: (1, 1)
focus: (1, 0.75)
directrix: y = 1.25
C. vertex: (-1, -1)
focus: (-1.25, -1)
directrix: x = -0.75
D. vertex: (-1, -1)
focus: (-1, -1.25)
directrix: y = -0.75
Answer: C
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Consider the cylinder in ?3. a. Identify the coordinate axis to which the cylinder is parallel. b. Sketch the cylinder.x - z2 = 0
A. a. Parallel to y-axis;
b. 
B. a. Parallel to y-axis;
b.
C. a. Parallel to x-axis;
b. 
D. a. Parallel to y-axis;
b. 
Find the determinant of the given matrix.
A. - 
B. 0
C. 
D. 
Perform the indicated division.
A. x2 - 2x + 4 B. x2 - 2 C. x2 + 4 D. x2 - 4x + 2
Suppose a firm's degree of financial leverage (DFL) is 1.0. Which of the following statements concerning this firm is correct?
A. The firm must have fixed costs associated with its production process. B. The firm's earnings per share (EPS) must equal zero. C. The firm's degree of total leverage (DTL) must equal 1.0. D. The firm's degree of operating leverage (DOL) must be greater than 1.0. E. The firm has no long-term debt, preferred stock, or other sources of financing that require fixed payments.