Riley is 3 years older than his sister. which of the following expressions shows the sum of their ages if s represents riley's sister's age?

Factor the expression using gcf 9b+45

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?

How do i put 3(x+7) in distributive property