The lengths of three sides of a triangle are 2x + 15 feet, 4x + 12 feet, and x+ 15. What is the perimeter of the triangle? Use the drop-down menu to complete the answer.

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?