On march 21, her hcg level was 200 mlU/ml. Two days later, her HCG level was 392 mlU/ml. Assuming that the model for HCG levels is of the form y=ab^x, find an equation that models the growth of HCG for Brad’s mothers pregnancy.

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?