Fived expenses are $140,000 per month, The company is curtently selling t,100 units per month. Required: Managoment is considoring using o now component that would increaso the unit variable cost by $42, Since the new compenent. would improve the company's product, the marketing manoger predicts that monthly soles would increase by 300 unlits. What should. be the overall effect on the company's monthly net operating income of this change if floped expenses are unaffected? (Negative amounts should be indicated by a minus sign.)