Model Exponential Growth and Decay
Solve $\mathrm { A } = \mathrm { A } _ { 0 } \mathrm { e } ^ { - 0.0077 \mathrm { x } }$

question 99

Multiple Choice

Model Exponential Growth and Decay
Solve.
-The function $\mathrm { A } = \mathrm { A } _ { 0 } \mathrm { e } ^ { - 0.0077 \mathrm { x } }$ models the amount in pounds of a particular radioactive material stored in a concrete vault, where $x$ is the number of years since the material was put into the vault. If 300 pounds of the material are initially put into the vault, how many pounds will be left after 140 years?

• A) 102 pounds
• B) 192 pounds
• C) 233 pounds
• D) 96 pounds

---

Definitions:

Assembly Plant

A facility used for industrial production where pieces of products are put together to construct a finished good.

Legal Agreement

A binding contract between two or more parties that is enforceable by law.

U.S. Clothing Firm

A U.S. Clothing Firm is a business enterprise located in the United States that specializes in the design, production, and sale of clothing and apparel items.

Direct Ownership

A situation where an individual or entity has full control and claim over an asset or property, without any intermediaries.