Greater Energy Systems recently reported $9,250 of sales, $5,750 of operating costs other than depreciation, and $700 of depreciation. The company had no amortization charges, it had $3,200 of outstanding bonds that carry a 5% interest rate, and its federal-plus-state income tax rate was 35%. In order to sustain its operations and thus generate sales and cash flows in the future, the firm was required to make $1,250 of capital expenditures on new fixed assets and to invest $300 in net operating working capital. 8. Refer to the data for Greater Energy Systems. What is the firm's free cash flow