Solve the problem.From the edge of a 1000-foot cliff, the angles of depression to two cars in the valley below are 21° and 28°. How far apart are the cars? Round your answers to the nearest 0.1 ft.
A. 713.4 ft
B. 724.5 ft
C. 724.4 ft
D. 714.4 ft
Answer: C
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Provide an appropriate response.What real numbers x satisfy the equation 
= 
?
A. {x|x = 0} B. {x|x ? real numbers} C. {x|x ? integers} D. ?
Solve the problem.The number of traffic accidents has been decreasing in a certain county each year. The data is shown in the table for several recent years. The set of data can be approximated with a linear equation.
Calculate the slope of the line.
A. -156 B. 88 C. -78 D. -88
Provide an appropriate response.When two linear equations are solved for y and the slopes are equal and the y-intercepts are different, the lines are 
A. Intersecting B. Parallel C. One Graph
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 1)2 = 12(x - 4)
A. vertex: (-1, 4) focus: (2, 4) directrix: x = -4 B. vertex: (4, -1) focus: (7, -1) directrix: x = 1 C. vertex: (-4, 1) focus: (-1, 1) directrix: x = -7 D. vertex: (4, -1) focus: (1, -1) directrix: x = 7