Paolucci Corporation's relevant range of activity is 4,000 units to 8,000 units. When it produces and sells 6,000 units, its average costs per unit are as follows: Average Cost per Unit Direct materials $ 6.45 Direct labor $ 3.30 Variable manufacturing overhead $ 1.25 Fixed manufacturing overhead $ 3.00 Fixed selling expense $ 1.05 Fixed administrative expense $ 0.60 Sales commissions $ 1.00 Variable administrative expense $ 0.50 If 5,000 units are sold, the variable cost per unit sold is closest to