A product cost is discounted based on the age of the customers. For example, if a customer's age is 60 years the customer gets a discount worth 16% of the product price. The following table shows the percentage X used to calculate the discount awarded for different customer's ages: Customer age less than 18 years Between 18 (included) and 40 (not included) years old Discount Percentage No discount 5% Between 40 and 60 years old 13% Between 60 and 80 years old 16% 80 or more years old 20% Use the function design recipe to develop a function named discount. The function has two parameters, the first parameter is the customer age and the second parameter is the product price. The function returns the value of the discount in dollars. Hint: you need to code the conditions that determine the discount percentage. If you think carefully about the order in which the conditions will be executed, you'll see that you don't need to use the Boolean operators ("and", "or","not") in the conditions.