Which of the following describes the image of a square after a dilation that has a scale factor of 2?

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. what distance from city a is the point where the truck and the car will meet?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Do,h = (7, 9) (14, 18) the scale factor is