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 10 feet and a depth of 4 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? 

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A. 1 feet from the base
B.  feet from the base
C.  feet from the base
D. 6 feet from the base


Answer: A

Mathematics

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Find the average value of the function f over the region R.f(x, y) = 5x + 10yR is the triangle with vertices , and  .

A. 20
B.
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D.

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Find the product.(x - 7)(x + 7)

A. x2 - 49 B. x2 + 14x - 49 C. x2 - 14x - 49 D. x2 - 14

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