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

---

Definitions:

Psychiatric Symptoms

Observable behaviors or experiences indicative of mental illness or psychological distress.

Discordance Rate

refers to the proportion of pairs of subjects where one subject has a condition or characteristic and the other does not.

Monozygotic Twins

Twins sharing the same genetic makeup as a result of one fertilized egg dividing into two separate embryos.

Dizygotic Twins

Also known as fraternal twins, they are two offspring born from the same pregnancy and fertilized by separate eggs.