3.Derive and graph the aggregate supply curve for tennis balls, where there are three different producers whose

MC curves are

A:

MC = 3 + .3Q

S

, w

here

Q

for each producer is measured in terms of 1,000 units.

B:

MC = 4 + .6Q

S

C:

MC = 1 + .1Q

S

Refer again to

question 3. If a technological change shifts producer B's marginal cost curve to that of producer

C, compute B's cost saving at an output level of two units (of 1,000)

pls explain step by step, and show me the graph pls