Give the Focus, Directrix, and Axis for the Parabola

question 25

Multiple Choice

Give the focus, directrix, and axis for the parabola.
-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 19 m wide,
Find the best location for the light source.

• A) 9 m down from the top
• B) 4.6 m down from the top
• C) 2.3 m down from the top
• D) 6.9 m down from the top

Analyze the role of market competition in maximizing total benefits to buyers and sellers.

Understand how public policy can affect market efficiency and address market failures.

Recognize the importance of willingness to pay in determining consumer surplus.

Insight into how market conditions, such as price ceilings and floors, affect consumer and producer surplus.