Idon't understand how to find the scale factor ; -;

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Find the measurement of angle b in the following triangle

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?