The distinction between supply and the quantity supplied is best made by saying that.

a. the quantity supplied is in a direct relation with prices, whereas supply is in an inverse relation.
b. supply is represented graphically by a curve and quantity supplied as a point on that curve.
c. the quantity supplied is represented graphically by a curve and supply as a point on that curve.
d. the quantity supplied is in an inverse relation with prices, whereas supply is in a direct relation.

b. supply is represented graphically by a curve and quantity supplied as a point on that curve. 

Explanation:

Qunatity supplied shows how qunatity of a product changes in response to changes in  price of that good. According to the law of supply, the higher the price of good, the higher the quantity supplied and the lower the price of a good, the lower the quantity supplied.  This shows that quantity supplied has a direct relationship with price.

Changes in quantity supplied is shown by movement along a supply curve.

Changes in supply is caused by other factors other than changes in price. Some of these factors are :

Changes in price of similar goods

Tax

Change in number  of suppliers

Technological advancement

Changes in supply is shown by movement of the supply curve either to the left or to the right and not a movement along the supply curve.

I hope my answer helps you

answer; operating revenues;

i'm pretty sure the answer is 60.