Cost Terms [LO 2] Explain how a cost can be controllable at one administrative level and noncontrollable at another administrative level. Sunk Cost [LO 2,3] Peter Takesha, the manager of testing services at a medical diagnostics firm, purchased a new lab testing machine last year for S30,000. This year a new machine, which is faster and more reliable than Peters current model, is on the market. In deciding whether to purchase the new machine, should Peter consider how much he paid for the old machine? Should he consider the value of the old machine in the used equipment market