# your code goes here #make the function which will take the input from the user for diffrent items def retai_item_description(): titem =input("Enter the item : ") treturn item t def get_number_of_purchased_items(): tquantity =int(input("enter quantity : ")) treturn quantity t t def get_price_per_unit(): tprice=float(input("enter price : ")) treturn price t def get_tax(): ttax =float(input("enter Tax rate : ")) treturn taxt #here this function will calculate the total amount and tax amount def calculate_subtotal(price,quantity): ttotal_amount1=price*quantity treturn total_amount1 def calculate_tax(price,quantity,tax): ttax_total=price*quantity*tax treturn tax_total #call all the user defined functions items=retai_item_description() quantity=get_number_of_purchased_items() price=get_pric ... See the full answer