Find the equation of the line below

What are the domain and range of the function? f(x) = -4 (sqrt)x

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∣∣

Use set builder notation to represent the following set: { -3, -2, -1, 0}