How do I find the value for Costs Profit, Profits, and Labor? I went ahead and figured out revenue. What formula would I use?

I'm not sure what would be cost profit and profit. But the picture following is what should be the answer.

People Revenue Costs Profits Profits Labour p/h 10 $6,000.00 $5,040.00 $960 $6.40/h $12,000 $5,880.00 $6,120.00 $40.80/h $18,000 $6,720 $11,280 $75 B 1 Cost per person $600.00 2 Room rental $500.00 3 Setup fees and registration $400.00 4 Postcard design for advertising $300.00 5 Labor (hours) 150 6 Postcards ordered 5000 7 Mailed postcards 4000 8 Registration cost per person $5.00 9 Credit card handling fee 4.00% 10 Lunch and beverages $25.00 11 Class handouts $30.00 12 Cost per postcard $0.35 13 Mailing cost per postcard 0.25$ 14 15 People Revenue 10 $6,000.00 20 $10,000.00 30 $18,000.00 40 $24,000.00 50 $30,000.00 60 $36,000.00 Costs Profits Profits Labor p/h People Revenue Costs Profits Profits Labour p/h 10 $6,000.00 $5,040.00 $960 $6.40/h $12,000 $5,880.00 $6,120.00 $40.80/h $18,000 $6,720 $11,280 $75 B 1 Cost per person $600.00 2 Room rental $500.00 3 Setup fees and registration $400.00 4 Postcard design for advertising $300.00 5 Labor (hours) 150 6 Postcards ordered 5000 7 Mailed postcards 4000 8 Registration cost per person $5.00 9 Credit card handling fee 4.00% 10 Lunch and beverages $25.00 11 Class handouts $30.00 12 Cost per postcard $0.35 13 Mailing cost per postcard 0.25$ 14 15 People Revenue 10 $6,000.00 20 $10,000.00 30 $18,000.00 40 $24,000.00 50 $30,000.00 60 $36,000.00 Costs Profits Profits Labor p/h