Answer:
D
Explanation:
Profit is Maximize when MR = MC
since MR=40 - 0.5Q
and MC= 4
Therefore:
40-0.5Q = 4
-0.5Q = 4 - 40
-0.5Q= -36
divide through by -0.5
Q = 72
since Q = 72
from Q = 160 - 4p
72 = 160 - 4P
-4p = 72 - 160
-4P = -88
divide through by -4
P = 22