The correct sentences that represent the inequality are as follows;
The sum of 2.1 and –1.2 times a number is at least 8.
The sum of 2.1 and –1.2 times a number is greater than or equal to 8.
The sum of 2.1 and –1.2 times a number is a minimum of 8.
<h2>Given </h2>
Inequality; 
<h3>What is inequality?</h3>
When two real numbers or two algebraic expressions are represented with symbols like <, > or ≤, ≥ they can be called an inequality.
Inequality; 
The correct sentences that represent the inequality are as follows;
- The sum of 2.1 and –1.2 times a number is at least 8.
- The sum of 2.1 and –1.2 times a number is greater than or equal to 8.
- The sum of 2.1 and –1.2 times a number is a minimum of 8.
To know more about Inequality click the link given below.
brainly.com/question/432376