Answer:


Explanation:
Let's call
each wash and
the wax.
We know by given that the car wash charges $8 per wash and $10 per wax, this can be expressed as
and

A certain day, the total sales were no more than $1300 and there were no more than 350 of either service.
This information can lead to the following system of inequalities


The image attached shows the solution to this sytem.
Remember that the solution is always the intersection between both shaded regions, in the image is marked with S.
Therefore, the answer to the question is

