34. A small market orders copies of a certain magazine for its magazine rack each week. Let X  demand for the magazine, with pmf x 1 2 3 4 5 6 p(x)

Suppose the store owner actually pays $1.00 for each copy of the magazine and the price to customers is $2.00. If magazines left at the end of the week have no salvage value, is it better to order three or four copies of the magazine? (Hint: For both three and four copies ordered, express net revenue as a function of demand X, and then compute the expected revenue.)