Question

我在做Economics的作业，有些不懂，请高手教一下，帮忙看一下,因为很重要又很急，请帮帮忙

我在做Economics的作业，有些不懂，请高手教一下，帮忙看一下，谢谢啦
Using the data in the table columns 1-6 below
1 2 3 4 5 6
units fixed variable total average marginal
outputs costs costs costs cost cost
0 18 0 18 infinity -
1 18 15.2 33.2 33.2 15.2
2 18 28.4 46.4 23.2 13.2
3 18 40.0 58.0 19.3 11.6
4 18 50.4 68.4 17.1 10.4
5 18 60.0 78.0 15.6 9.6
6 18 70.0 88.0 14.7 10.0
7 18 81.2 99.2 14.2 11.2
8 18 94.8 112.8 14.1 13.6
9 18 112.4 130.4 14.5 17.6
10 18 134.4 152.4 1 15.2 22.0

a)at what point of output is marginal cost/unit lowest?
b)at what point of output is average cost/unit lowest?
c)at what point of output is profit/unit greatest, and explain why?
d)at what point of output is overall profit the greatest,and explain why?
e) if you were in charge, and the output units were units of labour, at what level of labour would you recruit to minimize costs and maximise potential revenues

小弟觉得第一题是unit5第二题是 unit8 第三题是unit5第四题是 uint8
请高手帮忙看下对不对，怎么给解释？还有最后一题基本看不懂，请高手解下

Answer 1

如果是perfect competition market的话
嗯 前4个对的。
第五个是 unit8。 意思是，如果让你去经营，你会选择多少unit来最小化成本的同时最大化潜在利益？（假设output=labour情况下）