Please finish and make sure the ones I’ve already done are 100% accurate thank you

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

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

How many verticies does a triangular prims have