When a member's currency is declared "scarce", it is the duty of the IMF to______

The basic and essential economic problems in a community are related to choice and________

Given two substitute goods (X and Y) with demand and supply function;
Qd = 7p - 12
Qs = 4p + 9
Find the magnitude of excess demand when p = ₦18

Whatever form an economic system may take, choice is essential for members of the community because resources are__________

A retailer is distinguished by the nature of its sales, which is in___________