Help solving a differential equation

I want to check my answer using MATLAB but I'm not quite sure how to do it in MATLAB.

The problem is:

Use Euler's method to estimate T at t = 3 s. Use a step size of 1.0 s

dT/dt = 10e^-0.2t - 0.02(T-25)

with the initial condition T(0) = 25.

I would really appreciate the help.