3. A company operates on a margin of 33% of retail and estimates other variable cost at 50.13 per dollar of sales. Fixed expense is estimated at 54,000. a) What would be the profit if sales are $50,000? b) What is the breakeven quantity? 4. A line segment fitted to points whose coordinates are in the order (disposable income, personal consumption expenditure) for a nation passes through points (32, 30) and (57, 54), the numbers being in billions dollar. What are the values, names, and interpretations of the slope and (1 - slope) of this line