omputing growth rates (I): Suppose xt = (1.04) t and yt = (1.02) t (a) Based on the information about x and y, and assuming that this variables grow at constant rates. i. What is the growth rate of x, gx ? 1 ii. What is the growth rate of y, gy? (b) Calculate the growth rate of z, in each of the following cases: i. z = x 1/2y 1/2 ii. z = (x/y) 2 iii. z = x 1/3y 2/3