QUESTION 01: (05+05=10) The ZAARAA ZAARAA Corporation operates car rental agencies at more than 20 airports. Customers can choose from one of three contracts for car rentals of one day or less: 1. Contract 1: BDT 10000 for the day 2. Contract 2: BDT 5000 for the day plus BDT 30 per mile traveled 3. Contract 3: BDT 50 per mile traveled Contact signed up lists: 1. Contract 1: Signed up by Mr. Neymar for traveling 102 miles per day. 2. Contract 2: Signed up by Mr. Messi for traveling 70 miles per day. 3. Contract 3: Signed up by Mr. Jamaal Bhuiyan for travelling 90 miles per day. a. Express each contract as a linear cost function of the form y = a + bx. Where, X is the number of miles traveled in the day. b. Identify each contract as a variable, fixed and mixed cost function