Final answer:
The expense equation is (5000 - 20p) * 5, the expense function in terms of price is (5000 - 20p) * 5, and the revenue function in terms of price is (5000 - 20p) * p.
Step-by-step explanation:
The expense equation can be written in terms of demand by multiplying the demand function by the price. In this case, the demand function is given as q = 5000 - 20p, where q represents the quantity demanded and p represents the price. So the expense equation in terms of demand would be: Expense = q * Cost Per Unit = (5000 - 20p) * 5.
The expense function in terms of price can be found by substituting the given demand function into the expense equation. So the expense function in terms of price would be: Expense = (5000 - 20p) * 5.
The revenue function can be found by multiplying the demand function by the price. So the revenue function in terms of price would be: Revenue = q * Price = (5000 - 20p) * p.