Find the vertex and focus of the parabola.
A. vertex: 
focus: 
B. vertex: 
focus: 
C. vertex:
focus: 
D. vertex: 
focus: 
E. vertex: 
focus: 
Answer: A
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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 xy-plane; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane except y = 0; range: real numbers z ? 0 ; level curves: parabolas 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
D. Domain: all points in the xy-plane except y = 0; range: all real numbers; level curves: parabolas 
Find all real numbers in the interval [0, 2?) that satisfy the equation. sin2 x + sin x = 0
A. 
B. 
C. 
D. 
If 
and 
, use the multiplication property of probabilities to find P(A).
?
A. 0.4 B. 0.7 C. 0.3 D. 0.9 E. 0.6
Find the measure of an angle that has the specified description.The complement of an angle with measure 14°
A. 256° B. 346° C. 76° D. 166°