Answer: Purchased $12,000 in supplies
Provide services to customers for $27,000
Paid the utility bill of $750
Explanation: The accounting items that affect the operating cash flow of a company are those related to the business, that is, without them, the business would not carry out its activities.
These operating items are those of the income statement, excluding the effect of items that do not affect the cash as depreciation and amortization.
Operating cash flows also includes balance sheet items that are related to operations, such as accounts receivable and payable.