Inequalities are used to relate expression with unequal values
The inequality that describes the scenario is:
The baseball cards, you have received are:
The total baseball cards, you received are:
So, we have:
You want to have a total of 500 or more before 18.
This means that:
Where c represents the number of baseball cards, you need to collect on your own
Substitute
Collect like terms
Hence, the inequality that describes the scenario is:
Read more about inequalities at:
brainly.com/question/15137133