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 4 feet and a depth of 6 feet. The parabola is positioned in a rectangular coordinate system with its vertex at the origin. The receiver should be placed at the focus 
The value of p is given by the equation 
How far from the base of the dish should the receiver be placed? [Hint: First write an equation in the form of
src="https://sciemce.com/media/4/ppg__10618191633__f1q108g3.jpg" alt="" style="vertical-align: -4.0px;" /> for the parabola used to shape the dish.]
A. 1
feet from the base
B. 
feet from the base
C. 6 feet from the base
D. 
feet from the base
Answer: D
Mathematics
src="https://sciemce.com/media/4/ppg__10618191633__f1q108g3.jpg" alt="" style="vertical-align: -4.0px;" /> for the parabola used to shape the dish.]
A. 1 feet from the base
B. feet from the base
C. 6 feet from the base
D. feet from the base
Answer: D
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A. 
B. 
C. 
D. 
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A. 6.39E4 B. 6.39E-5 C. 6.39E-3 D. 6.39E-4