An investment of $2000 is deposited at a certain annual interest rate. One year later, $3000 is deposited in another account at the same rate. At the end of the second year, the accounts have a total value of $5105.45. The interest rate r can be found by solving 2000(1 + r)² + 3000(1 + r) = $5105.45. What is the interest rate?