Solve the following system by any appropriate method. If there is no real number solution, so state.4x2 - 4y2 = 842x2 + 2y2 = 58
A. (-5, -2), (-2, -5)
B. (5, -2), (5, 2)
C. (5, 2), (2, 5), (-5, -2), (-2, -5)
D. (5, 2), (5, -2), (-5, 2), (-5, -2)
Answer: D
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Multiply and simplify.
A. 15
B. -15
C. 25
D. -25
Solve the problem.A satellite dish is in the shape of a parabolic surface. Signals coming from a satellite strike the surface of the dish and are reflected to the focus, where the receiver is located. The satellite dish shown has a diameter of 14 feet and a depth of 3 feet. The parabola is positioned in a rectangular coordinate system with its vertex at the origin. Write an equation in the form of 
for the parabola used to shape the dish. 
A. y = 
x2
B. y = 
x2
C. y = 
x2
D. y = 
x2
Find an equation of a parabola satisfying the given conditions.Focus at 
, directrix y = - 
A. x2 = 3y B. y2 = 3x C. y2 = 12x D. x2 = 12y
Simplify.
- 
A. 
B. 
C. 
D. 