A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 3 ft deep and 40 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
?
Round to the nearest foot, if necessary. Enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
33
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What will be an ideal response?
Find the distance between points P and Q.P(3, 1, -2) and Q(-2, 0, -4)
A. 
B. 5
C. 
D. 2
Simplify.
A. -m B. 1 C. 0 D. -1
Graph: 
What will be an ideal response?