Remove the Parentheses from the Expression $( 2 x + 4 ) + ( 3 y + 4 r )$

question 217

Multiple Choice

Remove the parentheses from the expression. $( 2 x + 4 ) + ( 3 y + 4 r )$

• A) 2x + 4 - 3y - 4r
• B) 2x + 4 + 4y + 4r
• C) 2x + 4 - 4y + 4r
• D) 2x + 4 + 3y + 4r
• E) 2x + 4 + 3y - 4r

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Definitions:

Proerythroblasts

Immature red blood cell precursors found in the bone marrow, which eventually mature into erythrocytes.

Red Blood Cells

A rephrased definition of erythrocytes; these are cells in the bloodstream that carry oxygen from the lungs to the rest of the body and return carbon dioxide for exhalation.

Myeloblasts

Immature bone marrow cells that are precursors to granulocytes, a type of white blood cell involved in immune responses.

Blood Buffer

These are systems in the blood that maintain its pH within the narrow range necessary for proper bodily function, by neutralizing acids and bases.