Let the number of campers be [tex] n [/tex], and the rate charged by Sunnyside Campground be $r$.
For $n=1, \: r=58$
$n=2, \: r=66$
Difference is $66-58=8$ and stays constant for every additional camper.
The equation is thus,
$r=58+(n-1)8$
Or,
$r=50+8n$
