Calculator Diamond Boot Factory normally sells their specialty boots for $28 a pair. An offer to buy 110 boots for $21 per pair was made by an organization hosting a national event in Norfolk. The variable cost per boot is $10 and special stitching will add another $2 per pair to the cost. Determine the differential income or loss per pair of boots from selling to the organization Enter the amount as a positive number Differential per pair of boots Trom accepting the special order is