Maya is working two summer jobs, making $21 per hour tutoring and making $8 per
hour clearing tables. In a given week, she can work a maximum of 13 total hours and
must earn at least $160. Also, she must work at most 7 hours tutoring and a
minimum of 3 hours clearing tables. If x represents the number of hours tutoring
and y represents the number of hours clearing tables, write and solve a system of
inequalities graphically and determine one possible solution.