Solve.-4x - 12 = -80
A. 23
B. -64
C. -17
D. 17
Answer: D
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Use the unit circle to find the value of the trigonometric function.csc 
A. 
B. 
C. 2
D. 
Solve the problem.The average number of vehicles waiting in line at a toll booth of a super highway is modeled by the function 
, where x is a quantity between 0 and 1 known as the traffic intensity. What happens to the average number of vehicles waiting as traffic intensity increases?
A. The average number of vehicles waiting increases. B. The average number of vehicles waiting remains constant. C. The average number of vehicles waiting decreases. D. The average number of vehicles waiting decreases at first, but then increases.
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 12x = 8y - 76
A. vertex: (6, 5)
focus: (8, 5)
directrix: x = 4
B. vertex: (6, 5)
focus: (6, 3)
directrix: y = 7
C. vertex: (6, 5)
focus: (4, 5)
directrix: x = 8
D. vertex: (6, 5)
focus: (6, 7)
directrix: y = 3
Solve.What is 60% of 500 kilometers?
A. 3000 km B. 300 km C. 3 km D. 30 km