Whitmer Inc. sells to customers all over the U. S., and all receipts come in to its headquarters in New York City. The firm's average accounts receivable balance is $2.5 million, and they are financed by a bank loan at an 6.5% annual interest rate. The firm is considering setting up a regional lockbox system to speed up collections, and it believes this would reduce receivables by 20%. If the annual cost of the system is $15,000, what pre-tax net annual savings would be realized?

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.