Answer:
x + y <= 55
8.5x + 12y >= 350
Explanation:
We use a system of inequalities to solve this question.
I am going to say that:
x is the number of hours working at the window-washing job.
y is the number of hours working at the tutoring job.
You can work a maximum of 55 hours a week.
This means that:
x + y <= 55
You need to make $350 in order to cover your expenses. Your window-washing job pays $8.50 an hour and your tutoring job pays $12 an hour.
This means that:
8.5x + 12y >= 350
The system is given by:
x + y <= 55
8.5x + 12y >= 350