suppose that you want to increase all three of the resource availabilities in the product mix model simultaneously by the same percentage. you want this percentage to vary from -25% to 50% in increments of 5%. modify the spreadsheet model slightly so that this sensitivity analysis can be performed with a oneway solver table, using the percentage change as the single input. keep track of the computers produced in row 21, the hours in the range B26:B28 and the total profit. discuss the results