I need help with how to draw the indifference curves for this...

Would we start by deriving the utility function?

Instructions: Complete all questions. Show working for all parts. Answers do not have to be integers: assume all variables (goods, prices) are infinitely divisible. Submit answers in PDF format. 1. Alice's preferences over beer (x1) and pretzels (2) is represented by u (21, 202) = -7 (21 -2)2 (202 - 1) (a) Are her preferences monotone? Are they strictly monotone? Explain in no more than two brief sentences. (b) Are her preferences convex? Are they strictly convex? Explain in no more than two brief sentences. (hint: it may be helpful to draw some indifference curves to answer these questions, but this is not required for a mark)