Assignment:
Q1) A business invests $10,000.00 in a savings account for 2 years, At the beginning of the second year, an additional $3500.00 is invested, At the end of the second year, the account balance is $15,569.75. What is the annual interest rate?
Q2) Rita rows 12km upstream and 12km downstream in 3 hours, The speed of her boat in still water is 9km/hr. Find the speed of the stream?
Provide complete and step by step solution for the question and show calculations and use formulas.