| Calculate the missing amounts. | | 2015 | | 2016 | | | 2017 | | | 2018 | | Income Statement Data | | | | | | | | | | | | Sales revenue | | | | $127,895 | | | $enter a dollar amount | (e) | | $108,530 | | Cost of goods sold | | | | enter a dollar amount | (a) | | 37,039 | | | 34,967 | | Gross profit | | | | 89,496 | | | 78,698 | | | enter a dollar amount | (i) | Operating expenses | | | | 84,005 | | | enter a dollar amount | (f) | | 69,788 | | Net income | | | | $enter a total net income | (b) | | $ 4,633 | | | $enter a total net income | (j) | Balance Sheet Data | | | | | | | | | | | | Inventory | | $17,160 | | $enter a dollar amount | (c) | | $19,404 | | | $enter a dollar amount | (k) | Accounts payable | | 7,656 | | 8,580 | | | 6,072 | | | enter a dollar amount | (l) | Additional Information | | | | | | | | | | | | Purchases of inventory on account | | | | 34,175 | | | $enter a dollar amount | (g) | | $31,746 | | Cash payments to suppliers | | | | enter a dollar amount | (d) | | enter a dollar amount | (h) | | 32,538 | | | | | |