An example of a norm is an informal code of conduct recommending that employees help each other if time permits. a specific mandatory guideline asking employees to oil machine parts labeled A and B and replace C and D. a general mandatory guideline requiring all employees to leave their work machines in good order. a suggestion by the technical department that all work-related files are saved in a common location. a requirement by the human resources department that employees wear formal clothes during the week.

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500