Does anyone know what the 3-1 means? I can solve this itself on its own but i have no idea what (3-1) is trying to tell me here

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

The total number of dental clinics total for the last 12 months was recorded

What is the equation of a line passing through (-6,5) and having a slope of 1/3