Swanson and Associates presently leases a copy machine under an agreement that calls for a fixed fee each month and a charge for each copy made. Swanson made 6,700 copies and paid a total of $270 in March; in May, the firm paid $120 for 2,900 copies. The company uses the high-low method to analyze costs. Swanson's variable cost per copy is (rounded to 2 decimal places):