The value of x is _ °,and the value of y is_ °. this is really confusing help please..

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∣∣

You can find the constant of proportionality by finding the ratio of

Simplify the expression. -2/5(10+15m-20n)