If m represents the number of minutes of exercise, and c represents the number of calories burned during exercise, which of the variables m and c is dependent and which is independent?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

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?