The population P (in millions) of Italy from 2003 through 2015 can be approximated by the model

Question:

The population P (in millions) of Italy from 2003 through 2015 can be approximated by the model P = 57.59e0.0051t, where t represents the year,with t = 3 corresponding to 2003.
(a) According to the model, is the population of Italy increasing or decreasing? Explain.
(b) Find the populations of Italy in 2003 and 2015.
(c) Use the model to predict the populations of Italy in 2020 and 2025.