Answer:
Let's use "x" to represent the number of animals in the shelter.
The fixed weekly expenses of the animal shelter are $750, and each animal costs an additional $6 per week. Therefore, the total weekly expenses of the animal shelter would be:
Total Weekly Expenses = Fixed Weekly Expenses + (Cost Per Animal * Number of Animals)
Total Weekly Expenses = 750 + 6x
We know that during the winter month, the weekly expenses are at most $900. So we can write the following inequality to represent this situation:
Total Weekly Expenses ≤ 900
Substituting the expression for the total weekly expenses, we get:
750 + 6x ≤ 900
Simplifying this inequality, we get:
6x ≤ 150
Dividing both sides by 6, we get:
x ≤ 25
Therefore, the inequality that represents the number of animals in the shelter for expenses to be at most $900 a week is:
x ≤ 25
This means that the shelter can have at most 25 animals during the winter month for the expenses to be within the limit of $900 a week.