Jin rode his bike 3 miles in 8 minutes. josh rode his bike 2 miles in 9 minutes. what is the difference in number of miles they could ride in 72 minutes?

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∣∣

How do i do this activity, is appreciated

Which is f(5) for the function –2x2 + 2x - 3?