Final answer:
The amount of a good or service available to be purchased is called the quantity supplied. It depends on price and follows the law of supply, which states that as price increases, quantity supplied also increases.
Step-by-step explanation:
The amount of a good or service available to be purchased is called the quantity supplied. It represents how much of a good or service producers are willing and able to provide at various prices. The law of supply states that as the price of a good or service increases, the quantity supplied also increases, and vice versa.
For example, let's consider the supply of wheat flour in Amran governorate. At a price of 250 rials, the quantity supplied is 25,000 pounds. But at a lower price of 150 rials, the quantity supplied decreases to 15,000 pounds.
Overall, supply is determined by price and can be represented in tables, equations, or graphs. It shows the relationship between price and the quantity of a good or service producers are willing to supply.