Final answer:
Jane is not maximizing her utility because she should spend her remaining $2 on chicken sandwiches to maximize her satisfaction.
Step-by-step explanation:
To determine if Jane is maximizing her utility, we need to compare the marginal utility per dollar for chicken sandwiches and fries. Marginal utility per dollar is calculated by dividing the additional utility obtained from consuming one more unit of a product by the price of that product.
For chicken sandwiches, the marginal utility per dollar is 15 mu/$. For fries, the marginal utility per dollar is 3 mu/$. Based on this information, Jane should allocate her remaining budget to purchase chicken sandwiches rather than fries, as they provide a higher marginal utility per dollar.
Therefore, Jane is not maximizing her utility because she should spend her remaining $2 on chicken sandwiches to maximize her satisfaction.