Benjamin needs $0.75 more cents to buy a granola bar that costs $1.89. How much money does Benjamin have now? The equation that correctly models the problem is To undo what has been done to the variable on both sides of the equation. The solution of the equation is

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?