Answer:
D) Exponential decay
Explanation:
The correct function is:
![f(x) = 25(1/2)^x](https://img.qammunity.org/2022/formulas/mathematics/college/44ph2my1uokj9e99i02se19ksellrlw4va.png)
Required
What type of rate is it
An exponential function is represented as:
![f(x) = ab^x](https://img.qammunity.org/2022/formulas/mathematics/high-school/6fsefjmvvu8twodn8cxvemp1o3jq21s79o.png)
If
, then it represents growth
, then it represents decay
By comparison:
![b = 1/2](https://img.qammunity.org/2022/formulas/mathematics/college/wvucc3d1k6gex2hn811xc44sjoqmcasuji.png)
![1/2 < 0](https://img.qammunity.org/2022/formulas/mathematics/college/87496uzil6w8bch4zoylbhstb9msf6gamp.png)
Hence, the rate is exponential decay