I need help with the following exercise:

Suppose
X and Y evolve according to

dX
t = (2 + 5t + Xt)dt + 3dz1t

dY
t = 4Ytdt + 8Ytdz1t + 6dz2t;

where
z1t and z2t are Brownian motions with (dz1t)(dz2t) = 0,1dt. Determine the dynamics (SDE) of
a) X^4

b)
eX

c)
XY

d) X^4Y

thanks! any thoughts and suggestions are appreciated!