Question 15 4 pts Use Lagrange multiplier to find the optimal value of :=? - 3ry + 120 st.y = 2x - 1 12 Question 5 3 pts The demand and supply functions of a good are given by P = -3Q + 60 P = 20 + 40 Find equilibrium price (P) after imposition of a tax $5 per good. 48 Question 6 3 pts The demand and supply functions of a good are given by P = -3Q + 60 P = 20 + 40 Find equilibrium quantity (Q) after imposition of a tax $5 per good. 4