Answer the Question with an Algebraic Expression

question 103

Multiple Choice

Answer the question with an algebraic expression. Mary is k years old and her mother is 2 years less than twice as old as Mary. How old is Mary's mother?

• A) k - 4
• B) 2( k - 2)
• C) 2 k + 2
• D) 2 k - 2
• E) none of these

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Definitions:

Homeostasis

The tendency of a biological system to maintain stable internal conditions despite changes in external environments.

Insulin

A pancreas-derived hormone that assists in controlling blood glucose levels by facilitating the entry of glucose into the body's tissues.

Glucose

A simple sugar that is an important source of energy and is involved in many metabolic processes.

Nitrogenous Waste

Waste products that contain nitrogen, typically produced by the metabolic processing of proteins and nucleic acids, and excreted in the form of urea, ammonia, uric acid, or creatinine.