05 Question (4 points) e See page 383 A mail-marketing company combines two inputs, pre-stamped envelopes (input 1) and printed marketing campaign material (input 2). Every envelope can be stuffed with five pieces of paper. That is, the number of marketing mailers is determined by the following production function: y = min ( x1, 5 5, where y stands for the number of mailers, 1 stands for the number of pre-stamped envelopes, and 2 stands for the number of sheets of paper. 1st attempt