Microeconomics Help!?

Question

A vegetable fiber is traded in a competitive world market with a world price of $9 per lb. Almost unlimited supplies are available for import into the U.S. at this price.

What is the equation for demand? At a price of $9, what is the price elasticity of demand? What is the price elasticity of supply at this price? In a free market, what will be the U.S. price and level of fiber import?

Answer 1

You can not derive demand from this data.

Supply is (almost) horizontal line in this case at P=9

To solve elasticity question you need derive demand first, currently all we know from info provided is price, but at least another price and quantities are required.

Since supply is unlimited at current price it is possible to conclude that supply is already on "free market" level.

So given task does not provide enough information to make decisions regarding demand.