What is a fraction that is repeating between 0.5 and 1?

I'm terrible at math any here is appreciated.

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∣∣

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4