James went to a local fair. in addition the entrance cost, there is a fee per individual ride. after going on five rides, he had spent a total of $12.25. after going on twelve rides he had spent $21. what is the rate of cost per ride.

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?