Suppose that firm 1's supply curve is given by P = 2 + Q1 and firm 2's supply curve is given by P = 3 + Q2.
a. List firm 1's quantity supplied at prices $2 through $6. Use these points to graph firm 1's supply curve.
b. Solve firm 1's supply curve for Q1.
c. List firm 2's quantity supplied at prices $3 through $6. Use these points to graph firm 2's supply curve.
d. Solve firm 2's supply curve for Q2.
e. Solve for the aggregate supply curve by adding together firm 1's supply curve solved for Q1 and firm 2's supply curve solved for Q2.
Next, take the aggregate supply curve and solve it for P. Solve for the aggregate quantity supplied at prices $2.50, $3, $4, $5, and $6. Use these points to graph the aggregate supply curve.
h. Sketch all three supply curves on one graph.