Solve the problem.A whispering gallery is a room in the shape of an elliptic reflector. If a source of sound is placed at one focal point of an elliptic reflector, the sound is reflected through the other focal point. If one person speaks at one focal point, then another person at the other can hear sounds as faint as a whisper. If the whispering gallery is based on the ellipse 
how many units from the center of the ellipse would the two people stand?
A. 7 units
B. 25 units
C. 24 units
D. 49 units
Answer: A
Mathematics
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Evaluate the expression.(0.12) 2
A. 0.144 B. 0.24 C. 0.0144 D. 0.00144
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Complete the table and use it to solve the given equation.
= 5
A. -26 B. -6 C. No solution D. -15
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Solve the equation.
= - 
A. 45
B. 
C. - 
D. - 10
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Provide the proper response.How many vertices must there be in order to draw a connected planar network with 12 edges that separates the plane into 6 regions?
A. 16 B. 20 C. 8 D. Cannot be drawn
Mathematics