Lance's Truck Stop purchased a new automatic truck washing machine for $135,000 on January 1. Lance estimates that the machine will last for 10 years at which time it can be sold for $35,000. Lance also estimates that a total of 50,000 trucks would be washed by the machine before it was salvaged. During the first year 7,000 trucks were washed and during the second year another 9,000 were washed. REQUIRED: Calculate depreciation expense for the first two years using the straight-line, units of production, and double declining-balance methods.

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.