15 Name: ID: B Find the vertices of the ellipse. 2. 3D1 36 100 (-1, 0) and (1, 0) a. b. (-10, 0) and (10, 0) (-8, 0) and (8, 0) d. C. none of these (-6, 0) and (6, 0) e. 3. A lamp with a parabolic reflector is shown in the figure. The bulb is placed at the focus, and the focal diameter is 4 cm. Find the diameter d(C, D) of the opening 15 cm from the vertex. (a = 2, b = 15) a. 18 cm b. 15 cm 11 cm C. d. 17 cm e. 10 cm 3

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