Final answer:
To solve the problem, represent the number of car seats using an inequality. Set up the inequality x > 0, meaning the number of car seats should be greater than zero for the science club to make a profit.
Step-by-step explanation:
The subject of this question is Mathematics and the grade level is Middle School.
To solve the problem, we need to represent the number of car seats the science club needs to wash to make a profit using an inequality. Let's assume the number of car seats they need to wash is x. Since they want to make a profit, we can set up an inequality: x > 0. This means that the number of car seats should be greater than zero for the science club to make a profit.
For example, if they wash 5 car seats, which is greater than zero, they would make a profit.