Rui's utility function is U =X+ 25XZ + Z. Let the price of good X be py, the price of good Z be normalized to $1.00, and U be her level of well-being. What is her expenditure function? Rui's expenditure function (E) is 2 PX(U + 0.04) E= 5 -0.04 (PX + 1) . (Properly format your expression using the tools in the palette. Hover over tools to see keyboard shortcuts. E.g., a subscript can be created with the _ character.) Derive her uncompensated demand curve for X. Let Y be her income. Rui's uncompensated demand curve for good X is X = 0.5YPx +0.02py - 0.02 . (Properly format your expression using the tools in the palette.) Derive her compensated demand curve for X. Rui's compensated demand curve for good X is X= . (Properly format your expression using the tools in the palette.)