What is the topic sentence of the article "Rapper 21 Savage arrested for living in US with expired visa"?

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

answer; psychological influences;

answer; positive reinforcement;

answer; ///was   constructed according to a mathematical formula;