What is the slope of the line represented by the values in the table?

x y
10 14
2 -2
3 0
7 8
20 34

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?