the town of grayling has 10 thousand residents who produce fish from fish farms and lakes. each person who works on a fish farm produces 2 fish per day. each person who fishes in a lake produces 10-x fish per day where x is the number of people (in thousands) who fish in the lakes. each individual chooses the production method that gets them more fish. what is x in the nash equilibrium of this game? (hint: it must be the case that individuals choosing the lake are choosing their best response, and individuals choosing the farms are choosing their best response. how many fish are they catching?)