PharoahHorticulture provides and maintains live plants in office buildings. The company's926customers are charged $36per month for this service, which includes weekly watering visits. The variable cost to service a customer's location is $19per month. The company incurs $2,474each month to maintain its fleet of four service vans and $3,032each month in salaries.Pharoahpays a bookkeeping service $2per customer each month to handle all invoicing and accounting functions.