Please answer correctly

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∣∣

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

9/10 divide by -3/15 as a mixed number