What is the common factors of 60 36 48

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?