Payment Period Monthly Monthly Quarterly Cost $3,000 1,100 1,200 Cateogry Cost Rent Utilities Insurance Property Taxes Steel Forming Labor Price Annually Per Shelf Per Shelf Per Shelf Per Shelf 6,000 9.00 0.25 0.75 20.00 and a Refer to Table 5-1. Copper Company has monthly fixed costs of contribution margin of $5,000; $10 $5,800; $10 $5,000; $20 $11,300; $20 $11,300; $10 o