how the quantity that a person will demand varies depending on the price of a good or service.
While the main idea is usually in the first sentence, the next most common placement is in the last sentence of a paragraph. The author gives supporting information first and then makes the point in the last sentence. Here's a paragraph we can use as an example. Try to locate the topic and the main idea.
lADY Macbeth does not have a heathly state of mind in ACT 5
This is due to her guilt and regret and her subconscious mind making her act this way
