The lengths of the sides of a triangle are x,2x and 2x centimetres. If the perimeter is 20 centimeters, what is the value of x? a)4
b)5
c)8
d)10​

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?