please give working and explanation. (pen and paper are also acceptable)

the answer for question 1 is 6.622% but i dont know the working

the answer for q2 is Bank A: FV= 14190.20 and Interest=4190.20 and Bank B: 15677.02 and Interest=5677.02

please show working for the answers, will give thumbs up if correct

8. You have invested $3300 in the stock market and have a return of $4000 after 3 years. What annual interest rate compounded annually did your investment earn? Express your answer as a percent correct to three decimal places. 0. Bank A offers a loan rate of 7% compounded daily, whilst Bank B offers a rate of 9% compounded weekly. Which loan would be cheaper to take if the amount borrowed is $10,000 over a 5 year period