The demand for microwaves in a certain country is given by: …

The demand for microwaves in a certain country is given by: D = 8,000 –30P, where P is the price of a microwave. Supply by domestic microwave producers is: S = 4,000 + 10P. If this economy opens to trade while the world price of a microwave is $50, how many microwaves will be imported or exported?