Caitlyn was traveling at 16 m/s and creatures be to 4 m/s in three seconds. What was Caitlyn's acceleration?

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?