After a company's first week of operation, its accounting system showed the following information. Calculate the company's total expenses.

	Total Resources			Sources of Borrowed Resources	Sources of Owner Invested Resources	Sources of Management Generated Resources
	Assets			Liabilities	Stockholders' Equity
Event	Cash	Accounts Receivable	Supplies	Accounts Payable	Common Stock		Retained Earnings
Owner's cash investment	+ $6,000				+ $6,000
Service provided to customers	+ $1,200						+ $1,200
Supplies purchased			+ $900	+ $900
Service provided to customers		+ $1,000					+ $1,000
Cash partial payment for supplies previously purchased on account	- $500			- $500
Supplies used			- $400				- $400
Dividends paid to owners	- $100						- $100
Balance	$6,600	$1,000	$500	$400	$6,000		$1,700