Plz help me with this

Week 14-1 Solve the following problem. Maxx, v V x+ y s.t. 12 x+ y, x20, y20 Week 14-2 Consider the baseline asset pricing model our slide. Prove that the function in equation (3) given by @(Pb, qb) = Pbu'(Pb(1-qb)+e1) increases with Pb u' (ybqb tez ) ad(pb,qb) i,e show that > 0, if utility function satisfies that for all x > 0, ap u" (x) 0