Simplify the Expression

question 150

Multiple Choice

Simplify the expression. Write the final answer using positive exponents only.

---

Definitions:

Placebo

An inert substance given to a patient in control groups for medical experiments to compare the effects of a particular drug.

Testable Hypotheses

A proposition that can be put to a practical test to determine its validity.

Relative Risk

A measure in epidemiology that indicates the likelihood of a certain event or disease occurring in one group compared to another.

Mortality

The state of being subject to death; often used in statistics to refer to the rate of death in a population.