Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 9 m down from the top of the dome the ceiling is 25 m wide, find the best location for the light source.
A. 17.4 m down from the top
B. 8.6 m down from the top
C. 4.3 m down from the top
D. 12.9 m down from the top
Answer: C
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Find the perimeter of the polygon described. Write any improper fractions as mixed numbers.A regular octagon; one side is 6
yd long.
A. P = 50
yd
B. P = 44
yd
C. P = 44
yd
D. P = 42
yd
Given the following properties of a triangle find angle A.
Solve the problem.Christmas lights need to be hung around an L-shaped office building. Find the total length of the Christmas lights needed to hang them around the entire building.
A. 146 ft B. 132 ft C. 107 ft D. 162 ft
Use the rational zeros theorem to determine the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = 7x4 - x2 + 3
A. ± 
, ± 
, ± 1, ± 3, ± 7
B. ± 
, ± 
, ± 1, ± 3
C. ± 
, ± 
, ± 1, ± 7
D. ± 
, ± 
, ± 1, ± 3, ± 7