The original price of a pair of headphones is $89.99 before tax. When Brenda bought the headphones they rang up for $49.50 before tax. She then paid sales tax of 8% on the discounted price. Part A: What is the percent discount on the headphones? Show all work and steps in your solution. (5 points) Part B: What is the total amount that Brenda paid for the headphones including tax? Show all work and steps in your solution. (5 points)