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$$ costs, revenues, and variable cost per bag of lettuce. They think a largely manual process will have monthly fixed costs of $$36,000$ and variable costs of $ $1\mathrm{.}75$ per bag. A more mechanized process will have fixed costs of $ $75,000$ per month with variable costs of $ $1\mathrm{.}50$ per bag. They expect to sell the shredded lettuce for $ $3\mathrm{.}00$ per bag.