Paolucci corporation's relevant range of activity is 6,900 units to 14,500 units. when it produces and sells 10,700 units, its average costs per unit are as follows: average cost per unit direct materials $ 6.85 direct labor $ 3.75 variable manufacturing overhead $ 1.75 fixed manufacturing overhead $ 3.30 fixed selling expense $ 1.05 fixed administrative expense $ 0.75 sales commissions $ 1.00 variable administrative expense $ 0.65 if 9,700 units are sold, the variable cost per unit sold is closest to: