Alexandra buys sweatshirts for $12 each. In her store, she sells each sweatshirt for $30. Part A. As part of promotion, Alexandra discount the college sweatshirts by 25%. If a customer purchases 2 college sweatshirts at a sales tax of 4%, what is the total price for this customer? Show your work or explain your answer. Part B. During a clearance sale, Alexandra discount the Halloween sweatshirts by 55%. What is the percentage of profit Alexandra will make on each Halloween sweatshirt she sales? Show your work or explain your answer. Write an equation to find the amount of simple interest, A, earned on a $600 investment after 1½ years if the interest rate is 2%.