Aunt Mabel promised to give you $9000 when you successfully complete your freshman year, $6000 when you successfully complete your sophomore year, $1000 when you successfully complete your junior year, and $8000 when you successfully complete your senior year. Aunt Mabel made this promise when you graduated from High School and let's assume you go directly to the University of Illinois and graduate in four years. Aunt Mabel expects the interest rates to be 5.250% during your freshman year, 2.500% during your sophomore year, 3.250% during your junior year, and 9.250% during your senior year. If Aunt Mable can predict interest rates accurately, she will deposit into her bank account $. (dollars, rounded to two places after the decimal)

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.