A consumer's preferences are given by the following utility function: u(x,y) = xy Assume P010 =1, Py =3, and I = 54. a. Solve for the Marshallian demand functions of x and y (your answer should have numbers, not variables. You should round your answers to three decimal places): * old b. Suppose the price of x rises to Px"=3. How much income is required to purchase the old bundle at the new prices? I' = 108 c. What is x" at the new price? xB = 0 d. What is the substitution effect (for x)?: Substitution Effect = e. At the new price P " p. new =3. What is the Marshallian demand for x? x * new = f. What is the income effect (for x)? Income Effect =