Required information [The following information applies to the questions displayed below.] Alden 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. Estimate both the variable costs per unit and the total monthly fixed costs using the high-low method. (Do not round termediate calculations.) 1. Estimate both the variable costs per unit and the total monthly fixed costs using the high-low method. (Do not round intermediate calculations.) 2. Predict future total costs when sales volume is (a) 387,000 units and (b) 427,000 units