Find the Foci of the Ellipse Whose Equation Is Given $$\frac { ( x - 3 ) ^ { 2 } } { 25 } + \frac { ( y + 2 ) ^ { 2 } } { 36 } = 1$$

question 100

Multiple Choice

Find the foci of the ellipse whose equation is given.
- $$\frac { ( x - 3 ) ^ { 2 } } { 25 } + \frac { ( y + 2 ) ^ { 2 } } { 36 } = 1$$

• A) foci at \(( 3 , - 2 - \sqrt { 11 } )\) and \(( 3 , - 2 + \sqrt { 11 } )\)
• B) foci at \(( - 2,3 - \sqrt { 11 } )\) and \(( - 2,3 + \sqrt { 11 } )\)
• C) foci at \(( - 3 , - 2 - \sqrt { 11 } )\) and \(( - 3 , - 2 + \sqrt { 11 } )\)
• D) foci at \(( 4 , - 2 - \sqrt { 11 } )\) and \(( 4 , - 2 + \sqrt { 11 } )\)

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Definitions:

Humoral Immunity

One of the three general categories of immune response, in which invading antigens are presented by macrophages to B-lymphocytes. (“B” stands for bursa, an organ in which such cells are produced in birds. B-lymphocytes derive from the liver and bone marrow in humans.) This causes the B-cells to reproduce—a process reinforced by the lymphokine secretion from the helper T-cells. Some of the activated B-cells remain as memory B-cells. Others go on to be plasma cells, secreting antibodies called immunoglobulins that neutralize antigens in a number of different ways, such as clumping, presenting the antigen to phagocytic cells, or rupturing the antigen.

Macrophages

A type of white blood cell that engulfs and digests cellular debris, foreign substances, microbes, and cancer cells in a process called phagocytosis.

Memory B-Cells

A type of white blood cell involved in the immune response, capable of remembering past infections and pathogens to produce a quicker response upon re-exposure.

B-Lymphocytes

A type of white blood cell that plays a crucial role in the immune system by producing antibodies, which help fight off infections and diseases.