1.the equation of a circle in general form is x2 + y2 – 6x + 4y – 86 = 0 what is the center and radius of the circle?

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?