please help me with these questions.

Shelley Company had the following data available for 20x5: Cost of goods sold: $128,000 Cost of goods manufactured: $146,000 Beginning direct materials inventory: $13,000 Beginning WIP inventory: $32,000 Beginning finished goods inventory: $29,000 The ending balance of finished goods inventory is: $29,000 $18,000 $47,000 $146,000 $11,000 Shelley Company provided the following information for last month: Sales $10,000 5,000 Variable costs Fixed costs 3.000 Operating income $2,000 If sales units double next month, what is the projected operating income? $4,000 $7,000 $9,000 $12.000 cannot be determined with the information given