Darlington company experienced the following business events during its first month of operations. the company uses the perpetual inventory system. 1) the company purchased $13,300 of merchandise on account under terms 2/10, n/30. 2) the company returned $2,000 of merchandise to the supplier before payment was made. 3) the liability was paid within the discount period. 4) all of the merchandise purchased was sold for $20,400 cash. what is the net cash flow from operating activities as a result of the four transactions?