Could anyone help me to solve them?

(c) Write the consumer's Lagrangian. (Points: 4) Answer: (d) Derive the system of FOCs, and obtain the tangency condition. (Points: 6) Answer: 12\f5. (Points: 20) Consider a consumer with preferences represented by the following utility function: u(x,y ) = x3 y3 (a) Write this consumer's EMP, given a level of utility u. (Points: 3) Answer: min Pull + PyY Set (b) Explain why you can set up a Lagrangian for this problem, that is, why all constraints will be satisfied as equalities or strictly inequalities at the optimum. (Points: 3) Answer: 11