Profit = revenue - total costs

Revenue = price * quantity

Total Costs = fixed costs + variable costs

Fixed Costs = rent + salaries + utilities

Variable Costs = quantity + unit variable cost

Unit Variable Cost = material + labor

Rent = 10000

Salaries = 45000

Utilities = 4000, PREVIOUS*1.02

Material = 200

Labor = 90

Quantity = 25, PREVIOUS*2 FOR 6,

PREVIOUS+5

Price = 2000

I put it into D code program and I keep getting an error message about the revenue name not being defined. I'm very confused.