The population of fish in a local bay is modeled by the equation P(1) = 2,500(1.025), where i represents the number of years since 2,500 fish were first measured. Based on this equation, which of the following represents the percent the population will grow in a decade? (1) 2.5%
(3) 28%
(2) 25%
(4) 32%

The answer is (2) 25 % but I need the steps please