Answer:
The market wage rate w = $6
Explanation:
As it is a profit maximizing firm, it will hire where (consider the following formula and calculations)
Step 1.
MPL = W/P
Step 2.
At 8 worker, MPL = 2, P(MR) = 3
so,
Step 3.
2 = w/3
Step 4.
w = $6
Thus, The market wage rate is $6