# # Function to calculate the total cost of a purchase with tax
# def calculate_total_cost(price, tax_rate):
#     # Calculate the tax amount
#     tax = price * (tax_rate / 100)
    
#     # Calculate the total cost by adding the tax to the original price
#     total_cost = price + tax
    
#     return total_cost

# # Main function to test the calculation
# def main():
#     # Item price without tax
#     item_price = 100
    
#     # Tax rate in percentage
#     tax_rate = 8
    
#     # Calculate the total cost using the function
#     total_cost = calculate_total_cost(item_price, tax_rate)
    
#     # Display the result
#     print(f"The total cost including tax is: ${total_cost:.2f}")

# if __name__ == "__main__":
#     main()

# # Function to compute the total amount including tax
# def compute_total_amount(price, tax_rate):
#     """
#     Calculate the total amount including tax for a given item price and tax rate.
    
#     Args:
#         price (float): The price of the item without tax.
#         tax_rate (float): The tax rate as a decimal (e.g., 6% as 0.06).
        
#     Returns:
#         float: The total amount including tax.
#     """
#     # Calculate the tax amount
#     tax = price * tax_rate
    
#     # Compute the total amount by adding tax to the original price
#     total_amount = price + tax
    
#     return total_amount

# # Main function to test the computation
# def main():
#     """
#     Test the compute_total_amount function with a specific item price and tax rate.
#     """
#     # Define the item price without tax
#     item_price = 75
    
#     # Define the tax rate as a decimal
#     tax_rate = 0.06
    
#     # Compute the total amount using the function
#     total = compute_total_amount(item_price, tax_rate)
    
#     # Display the result
#     print(f"The total amount including tax is: ${total:.2f}")

# if __name__ == "__main__":
#     main()

# Function to calculate the total amount including tax
def calculate_total(price, tax_rate):
    """
    Calculate the total amount including tax for a given item price and tax rate.
    
    Args:
        price (float): The price of the item without tax.
        tax_rate (float): The tax rate as a decimal (e.g., 9% as 0.09).
        
    Returns:
        float: The total amount including tax.
    """
    # Compute the tax amount
    tax = price * tax_rate
    
    # Calculate the total amount by adding tax to the original price
    total = price + tax
    
    return total

# Main function to test the calculation
def main():
    """
    Test the calculate_total function with a specific item price and tax rate.
    """
    # Define the item price without tax
    item_price = 120
    
    # Define the tax rate as a decimal
    tax_rate = 0.09
    
    # Calculate the total amount using the function
    total_amount = calculate_total(item_price, tax_rate)
    
    # Display the result
    print(f"The total amount including tax is: ${total_amount:.2f}")

if __name__ == "__main__":
    main()