Respuesta :
[tex]d=160-25t[/tex]
Step-by-step explanation:
Let [tex]d[/tex] be the distance between Kayden and safe zone at any time.
It is given that initially [tex]d=160[/tex]
Lrt her speed be [tex]v[/tex]
Since the speed is constant,the distance covered by her in [tex]t[/tex] seconds=[tex]v\times t[/tex]
So,the distance between her and safe zone after [tex]t[/tex] seconds is [tex]160-vt[/tex]
It is given that after [tex]3[/tex] seconds,[tex]d=85[/tex]
So,[tex]160-3v=85[/tex]
[tex]3v=75[/tex]
[tex]v=25[/tex]
So,[tex]d=160-3t[/tex]