There is an increase in the demand and supply of apples

There is an increase in the demand for apples and a decrease in the supply of apples.

There is a decrease in the quantity demanded of apples along its demand curve and an increase in the supply for apples.

There is an increase in the demand for apples and an increase in the quantity supplied of apples along the supply curve

Price will decrease; quantity is ambiguous.

Price will increase; quantity will decrease

Price will increase; quantity is ambiguous.

Price will increase; quantity will increase

decrease in supply.

increase in demand

increase in supply.

decrease in demand.

There must be many buyers

There must be many sellers

The buyers and sellers must trade an identical item

The item traded must be a product

If there is excess demand, the price will rise

If there is excess supply, the price will fall

If there is no excess demand or excess supply, the market will be in equilibrium

A market which is out of equilibrium will always move rapidly to the equilibrium