On a game show, a contestant randomly chooses an envelope and wins the prize that is written inside. There are 3 envelopes containing a car.
5 envelopes containing a vacation, and 2 envelopes containing
electronics
What is the probability that a contestant picks a vacation?

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?