Identify the equation without completing the square.3y2 - 4x - 4y = 0
A. hyperbola
B. circle
C. ellipse
D. parabola
Answer: D
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Solve the problem.In a right triangle with sides and angles as shown, express cos2 
in terms of a, b, and c. 
A. 
B. 
C. 
D. 
Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
local maximum; 
local maximum; 
local minimum; 
saddle point; 
saddle point; 
local minimum; 
saddle point; 
saddle point
B. 
saddle point; 
local maximum; 
local minimum
C. 
saddle point; 
saddle point; 
saddle point; 
saddle point; 
saddle point
D. 
local maximum; 
local maximum; 
local minimum; 
local minimum
A small country consists of four states. The population of State A is 67,200, the population of State B is 78,300, the population of State C is 73,800, and the population of State D is 80,700. The total number of seats in the legislature is 100.The standard divisor is
A. 3000. B. 1000. C. 30,000. D. 10,000. E. none of these
Solve the equation by factoring.8x - 39 = 
A. 
B. 
C. 
D. {-8, 5}