Classify the following cash flows as either operating, investing, or financing activities, assuming the indirect method.

$\backslash$table$[[$Cash Flow$],[1.$ Paid long$-$term debt with cash.$],[2.$ Cash paid to purchase investments.$],[3.$ Received cash from long$-$term debt issuance.$],[4.$ Issued preferred stock for cash.$],[5.$ Paid cash dividends.$],[6.$ Received cash payments from customers.$],[7.$ Purchased inventories with cash.$],[8.$ Paid cash interest on outstanding notes.$],[9.$ Paid cash for utilities.$],[10.$ Sold stock investments for cash.$]]$