1. 10 years ago , you invested $ 500 in an account that pays 4 % per year in interest . 6 years later , you invested in an account that pays 3 % per year . How much do you have today ?

2. Cheap Loans , Inc. , has lent you $ 10,000 today at an interest rate of 4 % compounded annually . The loan will be repaid in a single payment at the end of 4 years . You plan to invest the $ 10,000 today in a certificate of deposit with Great Rates Bank that earns 10 % compounded annually and matures in 4 years . What will your net profit be when your certificate matures and you use the proceeds to repay the loan ?