Answer:
a-
[Find solution in the attachment]
a- 2)
Balance of accounts receivable at the end of 2018 = $2,400
Solution b:
Balance of accounts payable at the end of 2018 = $7,100
Solution c:
Gross margin = Sales - COGS = $21,400 - $14,300 = $7,100
Net Income = Gross margin - Operating expenses = $7,100 - $3,900 = $3,200
Solution d:
Cash flow from operating activities = Cash received from customer - Cash paid for accounts payable - Cash paid for operating expenses = $19,000 - $11,900 - $3,900 = $3,200