Problem 21-2B Sun Co.'s monthly unit sales and total cost data for its operating activities of the past year follow. Management wants to use these data to predict future fixed and variable costs. (Dollar and unit amounts are in thousands.) Cost behavior estimation- high-low P1 Month Units Sold Total Cost Month Units Sold Total Cost 1 195 97 7 145 93 125 87 185 105 3 105 73 135 85 155 89 10 85 58 5 175 95 81 11 95 6 110 215 12 115 79 Required 1. Estimate both the variable costs per unit and the total monthly fixed costs using the high-low method. 2. Use the results from part 1 to predict future total costs when sales volume is (a) 100 units and (b) 170 units Problem 21-3B Break-even analysis Hip-Hop Co. manufactures and markets several products. Management is considering the future of one product, electronic keyboards, that has not been as profitable as planned. Since this product is manufac- tured and marketed independently of the other products, its total costs can be precisely measured. Next year's plans call for a $350 selling price per unit. The fixed costs for the year are expected to be $42,000, up to a maximum capacity of 700 units. Forecasted variable costs are $210 per unit. P2 P3 Required safes, 1. Estimate the keyboards' break-even point in terms of (a) sales units and (b) sales dollars. 2. Prepare a contribution margin income statement showing sales, variable costs, and fixed costs for keyboards at the break-even point. 3. Prepare a CVP chart for keyboards like that in Exhibit 21.14. Use 700 keyboards as the maximum number of sales units on the horizontal axis of the graph and $250,000 as the maximum dollar amount on the vertical axis