If the number of different activities is represented by four consecutive odd integers, what is the algebraic expression that represents the total number of activities they have to choose from in one day?

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

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?