Could you help me with this question please?

2. (8 points) For r(t) = (t, t2), (a) (4 points) Find the displacement vector as t goes from t = 2 to t = 3. (b) (4 points) Write down the formula to compute the distance traveled by a particle moving on the curve as t goes from t = 2 to t = 3. (No need to calculate the value of the integral.)