Give the coordinates of the point described on the unit circle.The reflection of the point 
across the y-axis
A. 
B. 
C. 
D. 
Answer: B
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Find the probability.A bag contains 10 marbles of which 9 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
A. 
B. 
C. 
D. 
Identify the unknown amount as the percent, part, or whole.50% of what number is 11?
A. percent B. part C. whole
Identify the equation as either linear or nonlinear by trying to write it in the form 
5x2- 2.3x = x2 - 2
A. Nonlinear B. Linear
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 4)2 = 20(x + 2)
A. vertex: (2, -4) focus: (7, -4) directrix: x = -3 B. vertex: (-2, 4) focus: (-7, 4) directrix: x = 3 C. vertex: (-2, 4) focus: (3, 4) directrix: x = -7 D. vertex: (4, -2) focus: (9, -2) directrix: x = -1