Janko Wellspring Inc. Has a pump with a book value of $27,000 and a 4-year remaining life. A new, more efficient pump, is available at a cost of $48,000. Janko can also receive $8,300 for trading in the old pump. The new pump will reduce variable costs by $11,200 per year over its four-year life. The costs not relevant to the decision of whether or not to replace the pump are:

In the 1970s, kmart used blue light specials to encourage customers to flock to a particular department having a temporary sale. a spinning blue light activated for approximately 30 seconds, and then an in-store announcement informed shoppers of the special savings in the specific department. over time, loyal kmart shoppers learned to flock to the department with the spinning blue light before any announcement of special savings occurred. if kmart was employing classical conditioning techniques, what role did the spinning blue light play?