Problem
Fiona requires a minimum level of consumption, a threshold, to derive additional utility: U(X, Z) is 0 if X + Z ≤ 5 and is X + Z otherwise. Draw Fiona's indifference curves. Which of our usual assumptions are violated by this example?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.