When P dollars is invested at interest rate i, compounded annually for t years, the investment grows to A dollars, where A=P(1+i)^t

Trevor's parents deposit $8000 in a savings account when Trevor is 16 years old. The principal plus interest is to be used for a truck when Trevor is 18 years old. Find the interest rate i if the $8000 grows to be $9039.75 in 2 years.