Other nations had tried economic union in the past, and since adopting a common currency had shown economic benefits for them, the nations of Europe decided to try it too

Refer to the table above. What is the equilibrium quantity of notebooks?

A) 4 units B) 10 units C) 20 units D) 12 units

Suppose a tax is imposed on a good. This will

A) increase the price paid by the buyer and decrease the price received by the seller. B) increase the price paid by the buyer but leave the price received by the seller unchanged. C) decrease the price received by the seller but leave the price received by the buyer unchanged. D) increase the price received by the seller and decrease the price paid by the buyer.