To determine how much Bailey will spend altogether on her lunch, we need to add the delivery fee and the tip to the cost of her lunch. However, since the price of the lunch itself is not provided in your question, we cannot compute the total amount without that information.
If the total cost of Bailey's lunch (without delivery fee and tip) is denoted as 'X', then the total amount she will spend is given by the equation:
Total Cost = X + Delivery Fee + Tip Total Cost = X + $3.50 + $4.00 Total Cost = X + $7.50
Please provide the cost of the lunch, or if you want to check if the total is correct, we would need that information to complete the calculation.