3. What is a demand schedule? A. A specific point on the demand curve, showing how much will be purchased at a specific price.

B. the total amount of a good or a service that the people are willing to buy, also the "whole curve".

C. A schedule or chart to show what people are willing to buy at a given price.

D. A graph on the coordinate plane.

I believe its B. the total amount of good or a service that the people are willing to buy, also the whole curve.

Explanation:

Because its a demand schedule is goods or services that people are wanting to buy.

it increase by 12% a year from 1812-1820

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.