Match the question with the relationship of the functions. - What is the relationship between cost, revenue, and profit? a. Profit = Revenue - Cost - How do you find the break-even point? b. Cost = variable cost + fixed cost - What is the relationship between revenue and price? c. supply = demand - What is the relationship between cost, variable cost, and fixed cost? d. Revenue = Cost or Profit = 0 - How do you find the equilibrium point? e. R(x) = price * number of units