Which of the following is needed in order to calculate the speed of an object? * A distance and time
B Only distance
C only time
D acceleration and velocity

A distance and time

Explanation:

speed refers the distance covered and the actual time taken

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 .