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

$\backslash$table$[[$Cash Flow,Activity$],[1.$ Issued common stock for cash.,Financing$],[2.$ Received cash from long$-$term debt issuance.,$],[3.$ Issued preferred stock for cash.,$],[4.$ Paid cash dividends.,Financing$],[5.$ Received cash payments from customers.,Operating$],[6.$ Purchased inventories with cash.,Operating$],[7.$ Paid cash interest on outstanding notes.,Operating$],[8.$ Received cash dividends from investments.,$],[9.$ Paid cash for rent.,$],[10.$ Paid cash for a building.,$]]$x