2010 2011 2012 Costs incurred to date ** $280,000 $600,000 $785,000 Estimated costs yet to be incurred 520,000 200,000 -0- Customer billings to date ** 250,000 500,000 1,200,000 Collections of billings to date ** 120,000 320,000 1.040,000 **Hint: You have to figure out the actual cost, billings, and collections for each respective year. The reason why, is because the information presented is