Just need help with 1 please and a break down on how to do it. thank you

Cost Formulas, Single and Multiple Activity Drivers, Coefficient of Correlation Kimball Company has developed the following cost formulas: Material usage: Ym - $80x; -0.95 Labor usage (direct): Y - $20x; r = 0.96 Overhead activity: Yo - $350,000+ $100x; r -0.75 Selling activity: Y. - $50,000+ $10x; r -0,93 where x - Direct labor hours The company has a policy of producing on demand and keeps very little, if any, finished goods inventory (thus, units produced equals units sold). Each unit uses one direct labor hour for production The president of Kimball company has recently implemented a policy that any special orders will be accepted if they cover the costs that the orders cause. This policy was implemented because Kimball's industry in in a recession and the company is producing well below capacity (and expects to continue doing so for the coming year). The president is willing to accept orders that minimally cover their variable costs so that the company can keep its employees and avoid tayoffs. Also, any orders above variable costs will increase overall profitability of the company, Required: 1. Compute the total unit variable cost. Suppose that Kimball has an opportunity to accept an order for 20.000 units at $220 per unit. X