Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the x-y plane; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the x-y plane; range: all real numbers; level curves: parabolas 
C. Domain: all points in the x-y plane except y = 0; range: all real numbers; level curves: parabolas 
D. Domain: all points in the x-y plane except y = 0; range: real numbers z ? 0 ; level curves: parabolas 
Answer: C
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Determine when the Hamilton method gives an Alabama paradox on increasing committee size and who loses a seat.City A, City B, and City C are cooperating to build a community center catering to the three cities. Seats on the 11-member committee are assigned according to the populations of the cities. The population of City A is 5000, City B is 11,250, and City C is 15,500. Increase the committee's size by one seat at a time and reassign the seats.
A. Assignment of 15th seat; City C B. Assignment of 14th seat; City A C. Assignment of 16th seat; City B D. Assignment of 16th seat; City A
Solve the equation. Check your solution.- 
(x + 6) + 
(x + 4) = x - 2
A. 
B. 
C. 
D. 
Find an equation of a polynomial function of least degree having the given complex zeros, intercepts, and graph.f(x) has complex zero i
A. f(x) = (x - 4)(x2 + 1) B. f(x) = (x + 4)(x2 + 1) C. f(x) = (x - 4)(x + 1)(x - 1) D. f(x) = (x + 4)(x - 4)
Find the vertex and axis of symmetry of the graph of the function.f(x) = x2 + 6x
A. (3, -9); x = 3 B. (-3, -9); x = -3 C. (9, -3); x = 9 D. (-9, 3); x = -9