Kay Evans just completed her B.S. degree and is considering pursuing doctoral (Ph.D.) studies in economics. If Kay takes a job immediately a job after graduation, she can earn $35,000 during the first year, with an anticipated raise of $4,000 per year over the next five years. If Kay pursues the doctorate, five more years of school are required. Kay has been offered an assistantship paying $9,500 per year plus tuition. Books and computer purchases needed for her study will cost an average of $1,500 per year. These costs will not be incurred if Kay takes a job immediately. Upon graduation, Kay expects an annual income level of $55,000 during her first year of teaching. The growth rate in Kay s teaching salary is expected to equal the growth rate of the income she would make if she did not pursue the Ph.D. How should Kay evaluate her decision to pursue a Ph.D.? What other information do you need? What factors other than salary should be considered?