Y= +9
0+9=9
2+9=11
4+9=13
6+9=15
The equation has one solution.I think
We can find the distance that they are at at 10 seconds by multiplying their velocity.
Han - 40 feet away from Clare.
Clare - -50 feet away from Han.
Han and Clare would be -10 feet away from the meeting place at -10 feet.
The answer is: E
Hope this helps|