Mike's Bicycle Factory builds specialty bicycles with the following long-run cost function: TC = 2.5(Q3). Plot Mike's

Question:

Mike's Bicycle Factory builds specialty bicycles with the following long-run cost function: TC = 2.5(Q3). Plot Mike's ATC and MC curves for quantities 1 through 5.
a. For which quantities does Mike's Bicycle Factory exhibit economies of scale?
b. For which quantities does it exhibit diseconomies of scale?