Teresa has reward money for 30 off any purchase at her favorite department store The store takes 15 off any item purchased during its Early Bird sale Letx represent the listed price of an item in the store a The function P X rep P x Write your response here b The function D x represents the price of an item purchased during its Early Bird sale D x represents the price of an item if purchased with reward money Write your response here c Teresa buys an item during the Early Bird sale and is also permitted to use her reward money The cashier applies the discount first and then applies the reward money The function Po D x represents the final cost of the item PoD x Write your response here d What is the cost of a 75 item before tax if Teresa purchases an item during the Early Bird sale and the discount is applied before the reward money DOP x Type your answer here e The function DoP x represents the situation in which the cashier applies the reward money before the Early Bird discount Enter the simplified form of the function Write your response here Enter the simplified form of the function with no spaces f What is the cost of a 75 item before tax if the reward money is applied before the Early Bird discount