Cuáles son las coordenadas del punto medio del segmento que une los puntos A(8,4) y B(8,-4)

How far is x from 5 on a number line?

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?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.