4, 5, 6 (9 points) Silver Products has presented the following information for the past eight months operations: Units Total Cost Month April May June July August September October November 8,000 6,400 3,800 5,600 7,000 8,400 7,800 6,800 $ $ $ $ $ $ $ $ 30,400 25,800 18,300 23,200 26,000 29,800 26,500 25,700 4,5 Using the high-low method, calculate the variable cost per unit (3 pts) and fixed cost per month (3 pts). 6. What would total costs be for a month with 5,000 units produced (3pts)? 7. Arnold Corp has fixed costs of $25,000. Arnold expects profit of $300,000 at its anticipated level of production, 65,000 units. What is Arnold's unit contribution margin? A. $5 B. $10 C. $27.50 D. $20 8. Arnold Corp has a selling price of $20, variable costs of $15 per unit, and fixed costs of $25,000. If Arnold sells 12,000 units, the contribution margin ratio will equal A. $60,000 B. 25% C. 14.6% D. 10.4%