Question 4: ellen wants to purchase a book that is regularly priced at $18. the book is discounted 15%. she also needs to pay a 6% sales tax on the discounted price. what is the total amount ellen will pay for the book?

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?