Evaluate $12 - 8 x ^ { 2 }$ At X=-2
A) 32
B) -20
C) 28
D) 45
E)

question 46

Multiple Choice

Evaluate $12 - 8 x ^ { 2 }$ at x=-2 .

• A) 32
• B) -20
• C) 28
• D) 45
• E) 50

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Definitions:

Pre-B Cells

Immature B cells undergoing maturation in the bone marrow, important for the adaptive immune system.

Negative Selection

A process in immunology where self-reactive T or B cells are eliminated during development, preventing autoimmune diseases.

Positive Selection

A process in the immune system whereby cells that recognize a foreign antigen with high affinity are selectively proliferated.

Cold

A decrease in temperature, or a viral infection causing symptoms like runny nose, coughing, and sore throat.