Find the vertex, focus, directrix, and focal width of the parabola.y2 = -24x
A. Vertex: (0, 0); Focus: (6, 0); Directrix: x = -6; Focal width: 6
B. Vertex: (0, 0); Focus: (-6, 0); Directrix: x = 6; Focal width: 24
C. Vertex: (0, 0); Focus: (0, -6); Directrix: y = 6; Focal width: 96
D. Vertex: (0, 0); Focus: (-6, 0); Directrix: y = 6; Focal width: 96
Answer: B
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Provide an appropriate response.
Solve the following quadratic using any method: 
x2 = 24
A. x = -4, 4 B. x = -6, 6 C. x = 6 D. x = -36, 36
For the application, round the number as instructed.The Dow Jones Industrial Average increased by 6.377% last week. Express this change rounded to the nearest tenth.
A. 6.4% B. 6% C. 6.38% D. 6.3%
Solve the problem.The rectangular court shown in the figure requires 324 feet of fence. Once side of the court is against a building and needs no fence. What dimensions give the largest area?
A. 162 ft by 162 ft B. 40.5 ft by 81 ft C. 81 ft by 162 ft D. 81 ft by 81 ft
Perform the row operation(s) on the given augmented matrix.R2= -5r1 + r2
A. 
B. 
C. 
D. 