Mark Corporation produces two models of calculators. The Business model sells for $54, and the Math model sells for $35. The variable expenses are given below: The fixed expenses are $76, 800 per month. The expected monthly sales of each model are: Business, 1,000 units; Math, 600 units. The break-even point in unit sales for the expected sales mix is closest to: (Do not round intermediate calculations.) 1, 979 Business Model and 1, 188 Math Model 1, 979 of each product 1, 188 Business Model and 1, 979 Math Model 1, 188 of each product