Pulsar also manufactures a series of 19-in color television sets. The quantity x of these sets demanded each week is related to the wholesale unit price p by the following function.
p = -0.051x + 180 (0 x 12000)
The weekly total cost incurred by Pulsar for producing x sets is represented by the following function.
C(x) = (0.000001)x3 - 0.04x2 + 460x + 77000