While taking out net cash flow (operating activity ) we will use -
= Net income + depreciation expenses or amortization expenses + working capital changes + loss on sale of assets - gain on sale of assets
In working capital changes - increase in current assets would be subtracted.
increase in current liability would be added
decrease in current asset would be added
decrease in current liability would be subtracted
As per question -
= $29,000 + $3000 + $2000 + $4000 + $8000
= $ 46,000