A competitive rm has a long run total cost function c(y) = 3y2 +243 for y > 0 and c(0) = 0.
Its long run supply function is described as follows:
(a) y = p=6 if p > 54; y = 0 if p
(b) y = p=3 if p > 52; y = 0 if p
(c) y = p=3 if p > 57; y = 0 if p
(d) y = p=6 if p > 57; y = 0 if p
(e) y = p=3 if p > 59; y = 0 if p 49.