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 10 m down from the top of the dome the ceiling is 30 m wide, find the best location for the light source.
A. 16.8 m down from the top
B. 11.2 m down from the top
C. 22.5 m down from the top
D. 5.6 m down from the top
Answer: D
Mathematics
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Evaluate the integral.
A. -4i - 
j + 40k
B. -4i - 
j - 40k
C. -4i + 
j + 40k
D. +4i + 
j + 40k
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Factor the trinomial.10y2 - 23y + 12
A. (10y + 3)(y + 4) B. (2y + 3)(5y + 4) C. (2y - 3)(5y - 4) D. Cannot be factored
Mathematics
Use power series operations to find the Taylor series at x = 0 for the given function.
A. 
B. 
C. 
D. 
Mathematics
Use Euler's formula to answer the question.A polyhedron has 13 vertices and 28 edges. How many faces does it have?
A. 11 B. 17 C. 41 D. 13
Mathematics