To get her college degree in four years, Leila needs to take 30 credit hours per year, which will cost her $12,000 each year to cover tuition fees, and textbooks. Her annual cost of housing is $5,200, and her cost of food is $2,600 per year. If Leila does not go to college, her parents will let her live at home for free, and she will spend $1,500 on food. The rest of her expenses won't depend on whether or not she goes to college. Leila's best alternative to college is a job that pays $28,000 per year. From this information we can conclude that Leila's college degree will cost hers $______