Andrew is working two summer jobs, making $14 per hour lifeguarding and making $10 per hour washing cars. In a given week, he can work at most 15 total hours and must earn no less than $170. Also, he must work at least 9 hours lifeguarding and at most 3 hours washing cars. If xx represents the number of hours lifeguarding and yy represents the number of hours washing cars, write and solve a system of inequalities graphically and determine one possible solution.