Task content: Question 1 Somebody lends us 30000$ at an annual simple rate of 4% for 4 years. How much money will we pay at the end? (20%) Question 2 I invested, 8 years ago, a certain amount of money in a bank account that generated an annual compound interest rate of 7% where interests were produced semiannually. Today, there are 12000 in that account. How much money did I invest at the beginning? (20%) Question 3 Somebody wants to invest 15000$ for 6 years in a financial product that offers a simple interest rate of 8%. What's the amount of money obtained at the end? (20%) Question 4 Calculate the final amount produced with the most interesting of the following options: a) To invest 4000$ in a bank account that offers an interest rate of 8,3%, for 4 years? - The bank pays interests once per year. b) To invest 4000$ in a bank account that offers an interest rate of 8,1%, for 4 years? - The bank pays interests once per month. c) To invest 4000$ in a bank account that offers an interest rate of 8,2%, for 4 years? - The bank pays interests once per quarter. (20%) Question 5 My friend lends me 17000$ for 5 years at an annual simple rate of 9%. How much money will I end up paying back? (20%)