3. One hundred ($100) is deposited to a savings account at the end of each month for four years. Then the amount deposited to the account is increased to $150 at the end of each month for the next six years. The interest rate is 6% compounded monthly. Find the amount in the account at the end of ten years. Note that $100 and $150 are multiple deposits. (Hint: setting up a diagram may help.) (7 points)