.1)Suppose that after buying a new car you decide to sell your old car to a friend. You accept a 270day note for $3, 500 at 10% simple interest as payment. (Both principal and interest are paid at the end of 270 days.) Sixty days later you find that you need the money and sell the note to a third party for $3, 550. What annual interest rate will the third party receive for the investment?

2) Beginning in January, a person plans to deposit $100 at the end of each month into an account earning 6% compounded monthly. Each year taxes must be paid on the interest earned during that year. Find the interest earned during each year for the first 3 years.

3 You are buying a $10,000 second hand car with a down-payment of $3, 000 and you finance the remaining amount with a 3 year loan at 7.8% compounded weekly. (A) What are your weekly payments? How much interest in total are you paying? (B) What is the remaining balance after 2 years?