2. (30 points) Retrieve the following information by using a series of relational algebraic operations for the tables blow. If the answer of a question below depends on the results from a previous question, you may not have to repeat all the steps in previous question; however, you have to name the results of each operation in a distinguishable manner RESTAURANT (RestaurantNo, Name, Address, Phone) DISH(Dishld, Name, Price, LongDesc) CUSTOMER(CustomerNo, Name, Address, Phone, Email) INVOICE(invoiceNo, RestaurantNo, CustomerNo, Year, Month, Day, Time, Tota!Amount) ININVOICE(InvoiceNo, RestaurantNo, Dishld, Quantity, Price) a. (5 points) All customer names b. (5 points) Information of dishes of $15 or more c. (5 points) The names of customers who ate in a restaurant in 2010 d. (5 points) All price that Joe Thompson paid in 2010 e. (10 points) All price that Joe Thompson paid for Chicken Quesadilla in 2010