The heat loss through the windows of a home is estimated to cost the homeowner $412 per year in wasted energy. Thermal windows will reduce heat loss by 93 percent and can be installed for $1,232. The windows will have no salvage value at the end of their estimated life of 8 years. Determine the net present equivalent value of the windows if the interest rate is 10 percent.

M. cotteleer electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. one of the components has an annual demand of 235 units, and this is constant throughout the year. carrying cost is estimated to be $1.25 per unit per year, and the ordering (setup) cost is $21 per order. a) to minimize cost, how many units should be ordered each time an order is placed? b) how many orders per year are needed with the optimal policy? c) what is the average inventory if costs are minimized? d) suppose that the ordering cost is not $21, and cotteleer has been ordering 125 units each time an order is placed. for this order policy (of q = 125) to be optimal, determine what the ordering cost would have to be.