Answer:
Option A is correct.
Inequality represents the sale s in dollars:
![0.025s\geq 100](https://img.qammunity.org/2019/formulas/mathematics/high-school/rmlfhwqoxlocsv04qs3id571e0ohgi59jb.png)
![s> 4000](https://img.qammunity.org/2019/formulas/mathematics/high-school/451kpi6yp82vdtaqrdw6ed4pububvoq3xf.png)
Explanation:
Let s represents the sales in dollars.
Given :A salesperson at a clothing store earns a commission of 2.5% on all the sales he makes.
Earns a Commission = 2.5% of s =
![(2.5)/(100) * s = (25s)/(1000) = 0.025s](https://img.qammunity.org/2019/formulas/mathematics/high-school/hdx3jnzjbyndv796ksl3ncqzkyro8syptz.png)
It is also given that he needs to make to earn a commission of more than $100
then, we have an inequality:
![0.025s\geq 100](https://img.qammunity.org/2019/formulas/mathematics/high-school/rmlfhwqoxlocsv04qs3id571e0ohgi59jb.png)
divide both sides by 0.025 we get;
![s> 4000](https://img.qammunity.org/2019/formulas/mathematics/high-school/451kpi6yp82vdtaqrdw6ed4pububvoq3xf.png)
Therefore, an inequality represents the sales in dollar ;
or
![s> 4000](https://img.qammunity.org/2019/formulas/mathematics/high-school/451kpi6yp82vdtaqrdw6ed4pububvoq3xf.png)