A company does research on their product and finds that 3/5 of people who try the product, use it again. If 400 people try the product, how many would we expect to use it again? 120 240 80 30

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

What does independent variable and dependent variable mean in math?

Answer! if you don’t mind, can you explain