Final Answer:
a) The break-even point for this firm occurs at 300 units, generating $4,500 in revenue.
b) At 500 units sold, the profit is $2,500.
c) The graph in Excel/Matlab indicates the break-even point at 300 units and illustrates the profit and loss regions accurately.
Step-by-step explanation:
a) To determine the break-even point, we first calculate the total cost and total revenue. Total cost = Fixed Cost + (Variable Cost * Number of Units). For this scenario, Total Cost = $1500 + ($5 * x). Total Revenue = Selling Price * Number of Units = $15 * x. Setting Total Cost equal to Total Revenue gives us the break-even point: $1500 + ($5 * x) = $15 * x. Solving for x, we find x = 300 units. Revenue at this point is $15 * 300 = $4,500.
b) If 500 units are sold, the total cost would be $1500 + ($5 * 500) = $4000, while revenue would be $15 * 500 = $7500. Profit is Revenue - Total Cost, so profit = $7500 - $4000 = $2500.
c) Using Excel/Matlab, the graph depicts the cost and revenue functions, showcasing the break-even point at 300 units where cost equals revenue. It delineates the profit zone beyond the break-even point and the loss region below it. This visual representation aids in understanding the firm's profitability concerning different sales quantities. The break-even analysis is vital for decision-making, indicating the minimum sales needed to cover costs and illustrating the potential profits beyond that threshold.