2. There is no demand for an item when the price is $800. However, there is a demand for 100 items when the price is $600. The supplier will not provide any of the items if the unit price is
$300 or below. The supplier will provide 150 items when the unit price is $375.

a. Write the demand equation. Hint, let x be items and y be $.

b. Write the supply equation. Hint, let x be items and y be $.

c. Sketch the graph of supply and demand functions, and find the equilibrium point.