12)You can work at most 20 hours next week. You need to earn at least $108 to cover your weekly expenses. Your dog- walking job pays $12 per hour and your job as a car wash attendant pays $6 per hour. Write a system of linear inequalities to model the situation. A)Define your variables. B)Write a system of inequalities to represent the situation. C)Graph the system and shade the feasible region. D)Give a combination of hours you could work at each job to satisfy both working at most 20 hours and earning at least 108 dollars.