How do know what the perimeter is and how to solve it

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3

Scarlett stopped at a campground along the appalachian trail. the campground had a 12 acre area for tents, divided into 6 equal campsites. scarlett picked one of the sections to pitch her tent. which expression would give you the size of scarlett’s campsite? (more than one answer

Ling is using fraction strips to add 2/3 and 7/12's the sum is one whole plus how many twelves?