Break-Even for a Service Firm Jonah Graham owns and operates The Green Thumb Company (GTC), which provides live plants and flower arrangements to professional offices. Jonah has fixed costs of $3,240 per month for office/greenhouse rent, advertising, and a delivery van. Variable costs for the plants, fertilizer, pots, and other supplies average $24 per job. GTC charges $60 per month for the average job. Required: 1. How many jobs must GTC average each month to break even