please can you provide explanation the uncompensated demand functions

3. Ch 5, Problem 5.5. Suppose the utility function for goods x and y is given by utility = U(x, y) = xy + y. (1) (a) Calculate the uncompensated (Marshallian) demand functions for x and y, and describe how the demand curves for x and y are shifted by changes in I or the price of the other good. (b) Calculate the expenditure function for x and y. (c) Use the expenditure function calculated in part (b) to compute the compensated demand func- tions for goods x and y. Describe how the compensated demand curves for x and y are shifted by changes in income or by changes in the price of the other good