Zan azlett and angela zesiger have joined forces to start a&z lettuce products, a processor of packaged shredded lettuce for institutional use. zan has years of food processing experience, and angela has extensive commercial food preparation experience. the process will consist of opening crates of lettuce and then sorting, washing, slicing, preserving, and finally packaging the prepared lettuce. together, with help from vendors, they think they can adequately estimate demand, fixed costs, revenues, and variable cost per bag of lettuce. they think a largely manual process will have monthly fixed costs of $ 37 comma 500$37,500 and variable costs of $ 1.75$1.75 per bag. a more mechanized process will have fixed costs of $ 75 comma 000$75,000 per month with variable costs of $ 1.00$1.00 per bag. they expect to sell the shredded lettuce for