consider a newsperson problem in which the vendor pays a fixed cost of $800 in order to purchase items. each item purchased costs $40; sells for $100, if there is adequate demand (during the month); and resells (i.e., salvage) for $20, if there is not adequate demand. assume there is no inventory initially. the actual demand during the next month is unknown. however, it is known that the probability mass function for the demand d is given by