Solve the Problem $\mathrm { d } ( \mathrm { x } ) = \frac { \mathrm { Dx } } { \mathrm { x } + 9 } , 0 \leq \mathrm { x } \leq 12$

question 126

Multiple Choice

Solve the problem.
-To calculate the drug dosage for a child, a pharmacist may use the formula $\mathrm { d } ( \mathrm { x } ) = \frac { \mathrm { Dx } } { \mathrm { x } + 9 } , 0 \leq \mathrm { x } \leq 12$ . The child's age is $x$ and the adult dosage is $D$ . What is the dosage for an 3 -year old child if the adult dosage is $10 \mathrm { mg }$ ? (Round to the nearest tenth.)

• A) \(0.8 \mathrm { mg }\)
• B) \(3.3 \mathrm { mg }\)
• C) \(2.5 \mathrm { mg }\)
• D) \(10.0 \mathrm { mg }\)

---

Definitions:

Intelligence

The ability to learn from experience, solve problems, and use knowledge to adapt to new situations.

Early Childhood

The developmental period from birth to about 8 years old, marked by rapid physical, cognitive, and social growth.

Private Speech

Involves talking aloud to oneself as a way for children to guide their actions and thought processes, particularly in problem-solving.

Puzzle

A problem or enigma that challenges ingenuity for its solution.